I sold numerous accounts to this individual in the past. Later, they exposed all the accounts because I encountered various issues and they tried to take revenge on me.
In that case, if he is violating the ethical rules himself, I am exposing all the accounts I sold to him in the past.
In summary, you are an accounts farmer and seller as well. What do you mean by they exposed all the accounts? If they bought accounts from you, then why would they expose them all? Rather, you may be exposed; like in this thread, you listed two accounts.
However, are you sure all the accounts you list here are sold by you? Then you may try to recover your account through the forum recovery service. Because you should still have the original mail that was used during the account creation. Otherwise, you may lock yourself out when trying to recover through a secret question. But I am not sure if the secret question works for changed mail accounts.
At least you may ask admins, or create a thread on Meta if the recovery team could recover, or lock accounts for you in case you provide all the necessary information that the account belongs to you.
I am seller.
First, he didn't pay for 2 accounts. He scammed me.
Then TheSoapKing came to the forum and exposed 3 of my accounts.
After he did that, I did a little research. I looked at the IP addresses associated with the old email addresses of the accounts. I found that they were almost all in the same IP group.
In short, those above are the same person. And somehow I got my revenge by exposing the accounts I sold to him and received payment for.