I'm not sure but there's a high probability that OP is right.
Last Post from that User was in October 01, 2020 , So i guess the Account got hacked
The Account got for sure hacked of the Ethpil malware download link !
And thats why it got banned or locked as i and maybe others have reported it at this time .
There so many other Accounts that got banned also as they posting this Malware links and got hacked or sold.
As already written in here you have to follow the steps here:
Support for hacked/lost accounts
And it will takes some time maybe if get an reply and your account back in your hands.
Thanks all for info.
I wrote a lot of mails there but on the first option of account banned. I will try to the recoveries...@bitcointalk.org one
Thanks a lot