Of course. Thank you very much.

I signed the message. Tell me please where can I check my signature. Earlier, I used the online service https://tools.bitcoin.com/verify-message/, but now it doesn't work. Thank you.

Perhaps the signature itself will be useful: H2sqfbHDbK7dgZGdawoSp9rLyH9pHsC3pTOcxraABGQiJfKFeXbJ8LVmvd+FU9bQQBzAhjZmo3HsxayQ3v/GfKg=

Do you mean to sign my current account with the same address that is signed pant -79? If yes, then of course I can.

Absolutely correct.
1. Due to personal circumstances from 2015 to 2018, I could not pay enough attention to crypto currencies. My activity in this direction has fallen a lot.
2. I am a Russian-speaking person, so there is nothing strange in the fact that my first messages were only in Russian. As proof, I can enter into correspondence in Russian. It is just that when conducting bounty campaigns, posts in local branches are not accepted (very often), therefore I have to write only in English branches.
3. In 2018, I returned to trading in crypto currencies. But so I had the need for additional income, I decided to conduct a bounty campaign.
4. Due to the fact that by 2018, cases of hacking accounts have become frequent, my account was signed by me.
5. Also, the site administration can verify that I have not changed the email since the creation of my account pant-79@mail.ru. Just as it turned out now, the password to the email has long been lost, and the mail.ru administration has deleted accounts that were created before 2012, so I don’t even have the opportunity to restore access to the email.

This account was stolen from me 6 days ago. I demand to return it to the rightful owner!!! This theft has already been reported to the site administration.

And my account name starts with a small letter 'p', not a big one, like 'P'. So 'pant-79' is original name of account!

Thanks for the link. I have already written a letter with details to recoveries...@bitcointalk.org
I hope that I will regain access to my account. I also see that my account was already sold. Now the one who bought it started a signature campaign. I left him a message clarifying the situation. Perhaps he will be prudent and give me my account back.
I just wanted to write in this thread, because I see that my account count like suspicious. When I get access to it back, I would not want to get a negative trust.

pant-79 https://bitcointalk.org/index.php?action=profile;u=203430
This account is mine. July 16, I found that I can not log into my account. As a result of the investigation, I found this thread. As I can see from the information you provided, the thieves got access to my account back in June (as they suggested you to buy this acc back in June). The account is signed by my signature, but unfortunately I no longer have access to the email to which I registered the account. I wrote a letter to the site administration. I hope that the site administration will return my account back to me.