@leocg I'm sad. I have many things in my profile. I had a similar issue (same time, same reason) with MS account, but they can solved it.

Hi,
I'm using Opera from the beginnings.
I have set up two step verification, when it was accessible.
It was problems with my phone, and changed it finally.
But I cannot reach my account till then.
I have no the Opera in my authenticator app, and I don't know what is the backup code.
I have changed my password successfully, but it was not a solution, the account asked the auth code/backup code.
I have had to create a new account to create this post. Is it the normal way?
Are there any possibility to reach my profile?