Same problem here, they should fix it soon. Such dumb issue.

Hi, I recently wanted to use a new synchronization system so I went to the login form and logged in. But I have this issue, I have this account since old Opera days and now when I enter the profile page or edit page it says my username is not available so I can't change anything and when I want to create new profile it can't be done on the same email address.

What should I do or what you can do for me to solve this out?
I have there a lot of bookmarks since I was using the old Opera for years.

Same problem here, they should fix it soon. Such dumb issue.