Correct me if I wrong but seems like they really sent your eth but sent it via contract.
Hopefully you have full access to this address, as most exchanges doesn’t allows transaction via contracts, one time I faced same problem but the exchange helped me to restore my ethereum.
Does the transaction reversible if used with contract ? does the sender has the capacity to take back the coins being sent? because if does then it is not a fake ethereum who sent to OP but it is a tricked strategy of sending .
so OP would look at the system having the coins but in the withdrawal he will be denied and in time the site will get back the coins and will tell OP he had already has it.
sorry but i am not that knowledgeable about ethereum or etherscan transaction so i have a limited idea.
and how can i find them?? i scanned my wallet already and i didnt receive anything...
because like what said above, it was under contract meaning they have the right when to allow you to withdraw the coins.