Ok so for those who are struggling with this now, heres how i fixed it:
(when i say [..] i mean non defiable like [you] is your name on the pc and "opera [GX] stable" is just if you use regular or GX version of opera, anyway)
i went to "thispc\windows\user[you]\appdata" and here whats i did from here, i went to "roaming\opera" and deleted everything there. then after that i went back to appdata and went to "local\opera software\opera [GX] stable" and deleted eveything there aswell, then i emptied the trash bin and reinstalled opera gx, then it worked fine for me!