Even if an exchange is reputed, it is not good to hold on exchanges, it is not the person's key, it is not the person's coin on blockchain, no full control, the exchanges got the full control that can override yours. Noncustodial wallets provide the keys to have the full control. Offline wallets are the safest, like paper wallet, hardware wallet and airgapped wallets.

quote author=Anguwa link=topic=5121680.msg58603504#msg58603504 date=1638483548]
I really need an advise and a way forward
[/quote]
It is a scam.



Let me explain a bit further. Like I implied before, it is not your key, if you send coin to that exchange, you will not be able to spend from it, the owners of the fake exchange will have the control because they have the keys, they will only be the one that can spend from the exchange, which means you sending bitcoin to that exchange will definitely lead to you being a scam victim.

The scam exchange was created 2 months ago, which is an indication of how fake it is. Not listed on Coinmarketcap or Coingecko.