That exchange is an obvious scam.

Here is how the scam goes....You will get contacted by a person over telegram asking for a favor claiming that he/she has a balance on that exchange but his/her account got frozen by the the support and he/she need to withdraw the funds fast....he/she will agree with you to send to you all the funds to withdraw it through your account for a 10% given to you......When you make the account and that person sends to you the funds through the so called "UID" (Not on-chain transaction) you will try to withdraw it to find out that you have to deposit 0.05 BTC to verify your newly made account

And here is the obvious scam....the "UID" transaction is just a fake transaction with fake BTC...While your verification deposit will be a real on-chain transaction.

Please guys stay safe...stay away from any scams...always remember not your keys not your coins.

Best Regards