If you forgot to use a Tag OR Memo (e.g. BNB, XLM, XRP, etc) or used an incorrect one, then your deposit will not be credited.

Deposit to an incorrect address:
If you have sent your tokens to an incorrect address, we will not be able to assist you as the other address is not in our control. . To resolve this, you should contact the owner of the address or exchange/platform where you have accidentally sent the deposit.