This just happened to my itch.io account as well, only a few days ago. I was able to recover the password and gain access, but now I'll be re-uploading all files to another server... hopefully one that is more reliable.
That sucks, but I'm glad you were able to get your account back!
Unfortunately, I didn't have any luck so far, and the itch support just doesn't seem to do anything about it :-/
I'm really sorry to hear that. I hope you can eventually get it back.
Thank you for the kind words! :-)
