Unable to connect Ubisoft account

Basically I can log in in my Ubisoft account just fine by myself, but whenever I try to connect it with GFN (so basically clicking connect/reconnect which sends me to the Ubisoft login page), the Ubisoft website says that my password is wrong.

I tried clearing the browser cache, reinstalling GFN, changing browser, etc... but so far nothing has worked. Anyone got the same issue in the past?