The account isn't locked or banned (unless someone just unlocked it). Not sure who put that message in the signature either so if it wasn't you it's probably been compromised in some capacity.
Thanks everyone for the help. I locked the other topic.
I googled that Theymos address and it looks like I'm not the only one who have had this issue in the last few months :

If it's some kind of ransom-scheme, the individual behind it does not seem to care about the ransom, no one have recieved any answer from this email (as far as I searched) even months after.
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I deleted my actual bitcoin wallet address from my signature years ago for security reasons ( I could sign it, admitting it's still somewhere in the logs ) .
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If it's not in the logs, the only way I can guarantee my ownership of this account is by writing a message through my Bitcoin Luxury Marketplace ( which is linked publicly to my Bitcointalk account under my avatar ) so I just did that.
https://delouvois.com/californiaquail-account-verification-bitcointalk-orgAlso, feel free to check the IP logs and verify that the recurrent IP addresses from both account ( main and current ) does actually matches.
I hope this will be helpful, Im really looking forward to getting this account back but so far, no one has responded me.
If anyone has any idea, I'm ready to try it

Thanks again and have an nice day