diff --git a/packages/@uppy/companion/src/companion.js b/packages/@uppy/companion/src/companion.js
index 564a108fb7..683eeb3d1d 100644
--- a/packages/@uppy/companion/src/companion.js
+++ b/packages/@uppy/companion/src/companion.js
@@ -20,8 +20,10 @@ const { ProviderApiError, ProviderUserError, ProviderAuthError } = require('./se
 const { getCredentialsOverrideMiddleware } = require('./server/provider/credentials')
 // @ts-ignore
 const { version } = require('../package.json')
+const { isOAuthProvider } = require('./server/provider/Provider')
 
-function setLoggerProcessName ({ loggerProcessName }) {
+
+function setLoggerProcessName({ loggerProcessName }) {
   if (loggerProcessName != null) logger.setProcessName(loggerProcessName)
 }
 
@@ -72,13 +74,15 @@ module.exports.app = (optionsArg = {}) => {
 
   const providers = providerManager.getDefaultProviders()
 
-  providerManager.addProviderOptions(options, grantConfig)
-
   const { customProviders } = options
   if (customProviders) {
     providerManager.addCustomProviders(customProviders, providers, grantConfig)
   }
 
+  const getAuthProvider = (providerName) => providers[providerName]?.authProvider
+
+  providerManager.addProviderOptions(options, grantConfig, getAuthProvider)
+
   // mask provider secrets from log messages
   logger.setMaskables(getMaskableSecrets(options))
 
@@ -147,13 +151,18 @@ module.exports.app = (optionsArg = {}) => {
       // for simplicity, we just return the normal credentials for the provider, but in a real-world scenario,
       // we would query based on parameters
       const { key, secret } = options.providerOptions[providerName]
+
+      function getRedirectUri() {
+        const authProvider = getAuthProvider(providerName)
+        if (!isOAuthProvider(authProvider)) return undefined
+        return grantConfig[authProvider]?.redirect_uri
+      }
+
       res.send({
         credentials: {
           key,
           secret,
-          redirect_uri: providerManager.getGrantConfigForProvider({
-            providerName, companionOptions: options, grantConfig,
-          })?.redirect_uri,
+          redirect_uri: getRedirectUri(),
         },
       })
     })
diff --git a/packages/@uppy/companion/src/server/controllers/connect.js b/packages/@uppy/companion/src/server/controllers/connect.js
index 1bfbc06593..7018e18e38 100644
--- a/packages/@uppy/companion/src/server/controllers/connect.js
+++ b/packages/@uppy/companion/src/server/controllers/connect.js
@@ -30,7 +30,7 @@ module.exports = function connect(req, res) {
   }
 
   const state = oAuthState.encodeState(stateObj, secret)
-  const { provider, providerGrantConfig } = req.companion
+  const { providerClass, providerGrantConfig } = req.companion
 
   // pass along grant's dynamic config (if specified for the provider in its grant config `dynamic` section)
   // this is needed for things like custom oauth domain (e.g. webdav)
@@ -45,12 +45,12 @@ module.exports = function connect(req, res) {
     ]]
   }) || [])
 
-  const providerName = provider.authProvider
+  const { authProvider } = providerClass
   const qs = queryString({
     ...grantDynamicConfig,
     state,
   })
 
   // Now we redirect to grant's /connect endpoint, see `app.use(Grant(grantConfig))`
-  res.redirect(req.companion.buildURL(`/connect/${providerName}${qs}`, true))
+  res.redirect(req.companion.buildURL(`/connect/${authProvider}${qs}`, true))
 }
diff --git a/packages/@uppy/companion/src/server/controllers/logout.js b/packages/@uppy/companion/src/server/controllers/logout.js
index 741dc61dda..d1fc5597d5 100644
--- a/packages/@uppy/companion/src/server/controllers/logout.js
+++ b/packages/@uppy/companion/src/server/controllers/logout.js
@@ -26,7 +26,7 @@ async function logout (req, res, next) {
     const { accessToken } = providerUserSession
     const data = await companion.provider.logout({ token: accessToken, providerUserSession, companion })
     delete companion.providerUserSession
-    tokenService.removeFromCookies(res, companion.options, companion.provider.authProvider)
+    tokenService.removeFromCookies(res, companion.options, companion.providerClass.authProvider)
     cleanSession()
     res.json({ ok: true, ...data })
   } catch (err) {
diff --git a/packages/@uppy/companion/src/server/controllers/oauth-redirect.js b/packages/@uppy/companion/src/server/controllers/oauth-redirect.js
index ff4f095448..4805da245d 100644
--- a/packages/@uppy/companion/src/server/controllers/oauth-redirect.js
+++ b/packages/@uppy/companion/src/server/controllers/oauth-redirect.js
@@ -10,7 +10,7 @@ const oAuthState = require('../helpers/oauth-state')
  */
 module.exports = function oauthRedirect (req, res) {
   const params = qs.stringify(req.query)
-  const { authProvider } = req.companion.provider
+  const { authProvider } = req.companion.providerClass
   if (!req.companion.options.server.oauthDomain) {
     res.redirect(req.companion.buildURL(`/connect/${authProvider}/callback?${params}`, true))
     return
diff --git a/packages/@uppy/companion/src/server/helpers/jwt.js b/packages/@uppy/companion/src/server/helpers/jwt.js
index 0db6249a47..48d2f1c50a 100644
--- a/packages/@uppy/companion/src/server/helpers/jwt.js
+++ b/packages/@uppy/companion/src/server/helpers/jwt.js
@@ -125,7 +125,7 @@ module.exports.addToCookiesIfNeeded = (req, res, uppyAuthToken, maxAge) => {
       res,
       token: uppyAuthToken,
       companionOptions: req.companion.options,
-      authProvider: req.companion.provider.authProvider,
+      authProvider: req.companion.providerClass.authProvider,
       maxAge,
     })
   }
diff --git a/packages/@uppy/companion/src/server/middlewares.js b/packages/@uppy/companion/src/server/middlewares.js
index 73e8d798cb..a699b22c43 100644
--- a/packages/@uppy/companion/src/server/middlewares.js
+++ b/packages/@uppy/companion/src/server/middlewares.js
@@ -122,7 +122,7 @@ exports.gentleVerifyToken = (req, res, next) => {
 }
 
 exports.cookieAuthToken = (req, res, next) => {
-  req.companion.authToken = req.cookies[`uppyAuthToken--${req.companion.provider.authProvider}`]
+  req.companion.authToken = req.cookies[`uppyAuthToken--${req.companion.providerClass.authProvider}`]
   return next()
 }
 
diff --git a/packages/@uppy/companion/src/server/provider/Provider.js b/packages/@uppy/companion/src/server/provider/Provider.js
index e649cab1a6..b8b8c87f8a 100644
--- a/packages/@uppy/companion/src/server/provider/Provider.js
+++ b/packages/@uppy/companion/src/server/provider/Provider.js
@@ -122,5 +122,5 @@ class Provider {
 }
 
 module.exports = Provider
-// OAuth providers are those that have a `static authProvider` set. It means they require OAuth authentication to work
+// OAuth providers are those that have an `authProvider` set. It means they require OAuth authentication to work
 module.exports.isOAuthProvider = (authProvider) => typeof authProvider === 'string' && authProvider.length > 0
diff --git a/packages/@uppy/companion/src/server/provider/box/index.js b/packages/@uppy/companion/src/server/provider/box/index.js
index 0de108136e..5ce6278136 100644
--- a/packages/@uppy/companion/src/server/provider/box/index.js
+++ b/packages/@uppy/companion/src/server/provider/box/index.js
@@ -31,7 +31,6 @@ async function list ({ directory, query, token }) {
 class Box extends Provider {
   constructor (options) {
     super(options)
-    this.authProvider = Box.authProvider
     // needed for the thumbnails fetched via companion
     this.needsCookieAuth = true
   }
@@ -116,11 +115,12 @@ class Box extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: Box.authProvider,
       isAuthError: (response) => response.statusCode === 401,
       getJsonErrorMessage: (body) => body?.message,
     })
diff --git a/packages/@uppy/companion/src/server/provider/drive/index.js b/packages/@uppy/companion/src/server/provider/drive/index.js
index 98cab16569..384a86b4ed 100644
--- a/packages/@uppy/companion/src/server/provider/drive/index.js
+++ b/packages/@uppy/companion/src/server/provider/drive/index.js
@@ -51,11 +51,6 @@ async function getStats ({ id, token }) {
  * Adapter for API https://developers.google.com/drive/api/v3/
  */
 class Drive extends Provider {
-  constructor (options) {
-    super(options)
-    this.authProvider = Drive.authProvider
-  }
-
   static get authProvider () {
     return 'google'
   }
@@ -200,11 +195,12 @@ class Drive extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: Drive.authProvider,
       isAuthError: (response) => (
         response.statusCode === 401
         || (response.statusCode === 400 && response.body?.error === 'invalid_grant') // Refresh token has expired or been revoked
diff --git a/packages/@uppy/companion/src/server/provider/dropbox/index.js b/packages/@uppy/companion/src/server/provider/dropbox/index.js
index 9eda38bef3..d696f4cc74 100644
--- a/packages/@uppy/companion/src/server/provider/dropbox/index.js
+++ b/packages/@uppy/companion/src/server/provider/dropbox/index.js
@@ -56,7 +56,6 @@ async function userInfo ({ token }) {
 class DropBox extends Provider {
   constructor (options) {
     super(options)
-    this.authProvider = DropBox.authProvider
     this.needsCookieAuth = true
   }
 
@@ -136,11 +135,12 @@ class DropBox extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: DropBox.authProvider,
       isAuthError: (response) => response.statusCode === 401,
       getJsonErrorMessage: (body) => body?.error_summary,
     })
diff --git a/packages/@uppy/companion/src/server/provider/facebook/index.js b/packages/@uppy/companion/src/server/provider/facebook/index.js
index 4d5de8ce1a..e29f98f183 100644
--- a/packages/@uppy/companion/src/server/provider/facebook/index.js
+++ b/packages/@uppy/companion/src/server/provider/facebook/index.js
@@ -24,11 +24,6 @@ async function getMediaUrl ({ token, id }) {
  * Adapter for API https://developers.facebook.com/docs/graph-api/using-graph-api/
  */
 class Facebook extends Provider {
-  constructor (options) {
-    super(options)
-    this.authProvider = Facebook.authProvider
-  }
-
   static get authProvider () {
     return 'facebook'
   }
@@ -86,11 +81,12 @@ class Facebook extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: Facebook.authProvider,
       isAuthError: (response) => typeof response.body === 'object' && response.body?.error?.code === 190, // Invalid OAuth 2.0 Access Token
       getJsonErrorMessage: (body) => body?.error?.message,
     })
diff --git a/packages/@uppy/companion/src/server/provider/index.js b/packages/@uppy/companion/src/server/provider/index.js
index e0b927dbc8..fb7d4b1b59 100644
--- a/packages/@uppy/companion/src/server/provider/index.js
+++ b/packages/@uppy/companion/src/server/provider/index.js
@@ -12,7 +12,6 @@ const zoom = require('./zoom')
 const { getURLBuilder } = require('../helpers/utils')
 const logger = require('../logger')
 const { getCredentialsResolver } = require('./credentials')
-// eslint-disable-next-line
 const Provider = require('./Provider')
 
 const { isOAuthProvider } = Provider
@@ -25,26 +24,6 @@ const validOptions = (options) => {
   return options.server.host && options.server.protocol
 }
 
-/**
- *
- * @param {string} name of the provider
- * @param {{server: object, providerOptions: object}} options
- * @returns {string} the authProvider for this provider
- */
-const providerNameToAuthName = (name, options) => { // eslint-disable-line no-unused-vars
-  const providers = exports.getDefaultProviders()
-  return (providers[name] || {}).authProvider
-}
-
-function getGrantConfigForProvider({ providerName, companionOptions, grantConfig }) {
-  const authProvider = providerNameToAuthName(providerName, companionOptions)
-
-  if (!isOAuthProvider(authProvider)) return undefined
-  return grantConfig[authProvider]
-}
-
-module.exports.getGrantConfigForProvider = getGrantConfigForProvider
-
 /**
  * adds the desired provider module to the request object,
  * based on the providerName parameter specified
@@ -106,10 +85,11 @@ module.exports.addCustomProviders = (customProviders, providers, grantConfig) =>
 
     // eslint-disable-next-line no-param-reassign
     providers[providerName] = customProvider.module
+    const { authProvider } = customProvider.module
 
-    if (isOAuthProvider(customProvider.module.authProvider)) {
+    if (isOAuthProvider(authProvider)) {
       // eslint-disable-next-line no-param-reassign
-      grantConfig[providerName] = {
+      grantConfig[authProvider] = {
         ...customProvider.config,
         // todo: consider setting these options from a universal point also used
         // by official providers. It'll prevent these from getting left out if the
@@ -125,8 +105,9 @@ module.exports.addCustomProviders = (customProviders, providers, grantConfig) =>
  *
  * @param {{server: object, providerOptions: object}} companionOptions
  * @param {object} grantConfig
+ * @param {(a: string) => string} getAuthProvider
  */
-module.exports.addProviderOptions = (companionOptions, grantConfig) => {
+module.exports.addProviderOptions = (companionOptions, grantConfig, getAuthProvider) => {
   const { server, providerOptions } = companionOptions
   if (!validOptions({ server })) {
     logger.warn('invalid provider options detected. Providers will not be loaded', 'provider.options.invalid')
@@ -143,7 +124,8 @@ module.exports.addProviderOptions = (companionOptions, grantConfig) => {
   const { oauthDomain } = server
   const keys = Object.keys(providerOptions).filter((key) => key !== 'server')
   keys.forEach((providerName) => {
-    const authProvider = providerNameToAuthName(providerName, companionOptions)
+    const authProvider = getAuthProvider?.(providerName)
+
     if (isOAuthProvider(authProvider) && grantConfig[authProvider]) {
       // explicitly add providerOptions so users don't override other providerOptions.
       // eslint-disable-next-line no-param-reassign
diff --git a/packages/@uppy/companion/src/server/provider/instagram/graph/index.js b/packages/@uppy/companion/src/server/provider/instagram/graph/index.js
index 92c1c6457d..4bf05c3e0f 100644
--- a/packages/@uppy/companion/src/server/provider/instagram/graph/index.js
+++ b/packages/@uppy/companion/src/server/provider/instagram/graph/index.js
@@ -23,11 +23,6 @@ async function getMediaUrl ({ token, id }) {
  * Adapter for API https://developers.facebook.com/docs/instagram-api/overview
  */
 class Instagram extends Provider {
-  constructor (options) {
-    super(options)
-    this.authProvider = Instagram.authProvider
-  }
-
   // for "grant"
   static getExtraConfig () {
     return {
@@ -86,11 +81,12 @@ class Instagram extends Provider {
     return { revoked: false, manual_revoke_url: 'https://www.instagram.com/accounts/manage_access/' }
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: Instagram.authProvider,
       isAuthError: (response) => typeof response.body === 'object' && response.body?.error?.code === 190, // Invalid OAuth 2.0 Access Token
       getJsonErrorMessage: (body) => body?.error?.message,
     })
diff --git a/packages/@uppy/companion/src/server/provider/onedrive/index.js b/packages/@uppy/companion/src/server/provider/onedrive/index.js
index ec3f1e8a06..2e2ceb991f 100644
--- a/packages/@uppy/companion/src/server/provider/onedrive/index.js
+++ b/packages/@uppy/companion/src/server/provider/onedrive/index.js
@@ -23,11 +23,6 @@ const getRootPath = (query) => (query.driveId ? `drives/${query.driveId}` : 'me/
  * Adapter for API https://docs.microsoft.com/en-us/onedrive/developer/rest-api/
  */
 class OneDrive extends Provider {
-  constructor (options) {
-    super(options)
-    this.authProvider = OneDrive.authProvider
-  }
-
   static get authProvider () {
     return 'microsoft'
   }
@@ -98,11 +93,12 @@ class OneDrive extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: OneDrive.authProvider,
       isAuthError: (response) => response.statusCode === 401,
       getJsonErrorMessage: (body) => body?.error?.message,
     })
diff --git a/packages/@uppy/companion/src/server/provider/zoom/index.js b/packages/@uppy/companion/src/server/provider/zoom/index.js
index 9be59a399d..ea0852dda5 100644
--- a/packages/@uppy/companion/src/server/provider/zoom/index.js
+++ b/packages/@uppy/companion/src/server/provider/zoom/index.js
@@ -29,11 +29,6 @@ async function findFile ({ client, meetingId, fileId, recordingStart }) {
  * Adapter for API https://marketplace.zoom.us/docs/api-reference/zoom-api
  */
 class Zoom extends Provider {
-  constructor (options) {
-    super(options)
-    this.authProvider = Zoom.authProvider
-  }
-
   static get authProvider () {
     return 'zoom'
   }
@@ -157,6 +152,7 @@ class Zoom extends Provider {
     })
   }
 
+  // eslint-disable-next-line class-methods-use-this
   async #withErrorHandling (tag, fn) {
     const authErrorCodes = [
       124, // expired token
@@ -166,7 +162,7 @@ class Zoom extends Provider {
     return withProviderErrorHandling({
       fn,
       tag,
-      providerName: this.authProvider,
+      providerName: Zoom.authProvider,
       isAuthError: (response) => authErrorCodes.includes(response.statusCode),
       getJsonErrorMessage: (body) => body?.message,
     })
diff --git a/packages/@uppy/companion/test/__tests__/provider-manager.js b/packages/@uppy/companion/test/__tests__/provider-manager.js
index 5c1a8aa7f0..084e2ec9f1 100644
--- a/packages/@uppy/companion/test/__tests__/provider-manager.js
+++ b/packages/@uppy/companion/test/__tests__/provider-manager.js
@@ -5,6 +5,8 @@ const { setDefaultEnv } = require('../mockserver')
 let grantConfig
 let companionOptions
 
+const getAuthProvider = (providerName) => providerManager.getDefaultProviders()[providerName]?.authProvider
+
 describe('Test Provider options', () => {
   beforeEach(() => {
     setDefaultEnv()
@@ -14,7 +16,7 @@ describe('Test Provider options', () => {
   })
 
   test('adds provider options', () => {
-    providerManager.addProviderOptions(companionOptions, grantConfig)
+    providerManager.addProviderOptions(companionOptions, grantConfig, getAuthProvider)
     expect(grantConfig.dropbox.key).toBe('dropbox_key')
     expect(grantConfig.dropbox.secret).toBe('dropbox_secret')
 
@@ -33,7 +35,7 @@ describe('Test Provider options', () => {
 
   test('adds extra provider config', () => {
     process.env.COMPANION_INSTAGRAM_KEY = '123456'
-    providerManager.addProviderOptions(getCompanionOptions(), grantConfig)
+    providerManager.addProviderOptions(getCompanionOptions(), grantConfig, getAuthProvider)
     expect(grantConfig.instagram).toEqual({
       transport: 'session',
       callback: '/instagram/callback',
@@ -102,7 +104,7 @@ describe('Test Provider options', () => {
 
     companionOptions = getCompanionOptions()
 
-    providerManager.addProviderOptions(companionOptions, grantConfig)
+    providerManager.addProviderOptions(companionOptions, grantConfig, getAuthProvider)
 
     expect(grantConfig.dropbox.secret).toBe('xobpord')
     expect(grantConfig.box.secret).toBe('xwbepqd')
@@ -116,7 +118,7 @@ describe('Test Provider options', () => {
     delete companionOptions.server.host
     delete companionOptions.server.protocol
 
-    providerManager.addProviderOptions(companionOptions, grantConfig)
+    providerManager.addProviderOptions(companionOptions, grantConfig, getAuthProvider)
     expect(grantConfig.dropbox.key).toBeUndefined()
     expect(grantConfig.dropbox.secret).toBeUndefined()
 
@@ -135,7 +137,7 @@ describe('Test Provider options', () => {
 
   test('sets a main redirect uri, if oauthDomain is set', () => {
     companionOptions.server.oauthDomain = 'domain.com'
-    providerManager.addProviderOptions(companionOptions, grantConfig)
+    providerManager.addProviderOptions(companionOptions, grantConfig, getAuthProvider)
 
     expect(grantConfig.dropbox.redirect_uri).toBe('http://domain.com/dropbox/redirect')
     expect(grantConfig.box.redirect_uri).toBe('http://domain.com/box/redirect')
@@ -158,8 +160,8 @@ describe('Test Custom Provider options', () => {
       },
     }, providers, grantConfig)
 
-    expect(grantConfig.foo.key).toBe('foo_key')
-    expect(grantConfig.foo.secret).toBe('foo_secret')
+    expect(grantConfig.some_provider.key).toBe('foo_key')
+    expect(grantConfig.some_provider.secret).toBe('foo_secret')
     expect(providers.foo).toBeTruthy()
   })
 })