Surprised how a hero member does not know the basics of the forum?
Even his account was created in 2016, which means that he knows some of updated rules.
I think it has been hacked but no details show a password changing.
The account may have been sold without changing the password.
In deed the account has some abnormal post gaps which could suggest that the account probably changed ownership. If not, the owner of the account probably does not know that account sales are no longer encouraged in the forum.
Based on the post history and the boards the owner frequently posted on, you could tell that the person could have not even been aware that other boards like Meta and Reputation exist here
where he/she could have easily stumbled upon people talking about how account sales are not welcome here.
