There isn't much you can do. Try following these steps Recovering hacked/lost accounts. There is also the Cryptios team which handles account recoveries you can check in at that topic and see what else can be done if anything. They can see IP info and some other things that generally can help them determine account ownership.

Note to everyone else Stake an Address somewhere.

Maybe you have ever posted your btc adress here on the forum !
In some Signature Camp. or somewhere else .
If you have done that you can send a signatured Message from there , but i would advice to follow the Cryptios steps for recover your Account .
Wish you good luck with that !

Maybe check your Email here https://haveibeenpwned.com/  that shows you if your email got compromised !
Also if the Hacker got access to your email and just wanted your account its easy to change just the email on the account .
Hope you already have changed your email login.
Also try to remember what sites have you used the last days or have you installed some software or wallet the last days .
Its possible that there was an Software that stole your login .

When you canceled your new email, you will be locked.  Then go to steps Recovering hacked.
As I know, Admin needs you to message by the original email.

The Original email is a registered email when you register on bitcointalk first.

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What that means 'account for sale' https://bitcointalk.org/index.php?action=trust;u=48981
Are you sold it without payment?

I think the recover account right now already has a few actions to do it a Signature Address. Altcoin "Sign Message" could be accepted.

I help one of my local community members, he not doing a stake bitcoin address but can unlock his account using Ethereum Sign Message.

Just try to communication your account problem with Cryptios team, ask them to verify the account using the altcoin sign message.

Send a email torecovery team, here is the email address  from original mail associated with your account. You should include you username and you have to explain briefly how your account locked/hacked. Since you had not signed btc address your ETH address would help you if you are lucky enough. You should include your unedited post link as a proof of ownership. If you don't know how to sign message from ETH address then this article would help you. I believe you have private key of your unedited ETH address. So try this method hope you it will help you recover your account.

Wasn't able to verify that message. Would be useful if you could to this link and post a public URL of successful verification?

it says often not mandatory, did you get any reply on you recovery request yet?

if you still have access to the original registered email address, you still have a chance to recover your account
just be patient and wait for your turn, they will need to do some checkings first
once the manual recovery process has started, I think you need to wait a week for it to complete
here's a thread of recovered accounts: All the Ownership-Changed and Restored accounts

 maybe this will help you.

then you had a long break.
https://bitcointalk.org/index.php?action=profile;u=48981;sa=showPosts;start=1220