I never beg for money so I never posted any BTC addresses to which I have private keys.

Moreover, I'm pretty sure that the only way to hack my account was either to brute force the password or hack this forum db, as my computer is clean and nothing else was hacked.

Well, I guess after so many years on this forum it's good to know how bad things are here...

As far as I understand the ownership of my email account is not a proof of my account ownership on this forum and I never posted any of my bitcoin addresses on this forum.

The hacker changed my email address, so I can't change my password or login.

What was the point of sending me an email to lock my account? I locked it but I can't unlock it? What is going to happen to this account?