How I can fix this or change password?
I can say how much exp and what on stash, to prove that this is my account.

Send me an e-mail at support@osumiagames.com and let me know your game username, Steam account username and a new password you'd want to use.

I'm sorry, this is not my account. I understood how they work accounts in the game, that for the official server one for the dedicated (if created friend) another. Do not change the password is someone's account for the official servers. Excuse for troubling. Uncomfortable happened

All right, no problem!