I don't think there's much to do about this but...

So I launched my game earlier only to realize that it had been randomly restarted? Like, I got a little confused as the language selection part appeared...but when I chose multiplayer, and while still being logged into my Google Play account, I had to for once more enter a username, which of course has been taken, so, all in all, I am not able to access my account anymore no matter what I try. I had reached level 30 on multiplayer earlier today and unlocked the last dimention, only for this to happen in the end... I had also caught and evolved all the mortys I wanted for my team... Has this all gone to waste now? I was logged into Google Play but it doesn't seem like it has saved anything on the cloud...Please, if anyone knows anything, light me up...