After hard checking, I figured out that there was some glitch in text on config.c that cause bug in Polari3DS config menu, so i need to do a little bit of fix.
Then, Plugin loader is now translated!
And at the end, as tested only on it, this version should work properly on all 3ds system.
Enjoy your Italian version of Polari3DS, now better than ever!!!
REMEMBER!
If you find a bug, please, leave a blank issue here on github, thanks!