Show please proofs that you are - account owner (transaction from quoted on 2016 year BTC address in the META section bitcointalk forum. If you have no proofs we cant add you in airdrop.
so how to deal with that ?

there's a post in 2016 regarding your BTC address. if you own that address, you can post a signed message here to prove that you're the owner of that btc, subsequently, that also means you're the real owner of your bitcointalk account.