both are my account withdrawal and recipient .
I know but you use your Metamask as a sender and Kucoin account as a receiver.
Bad news is with Metamask wallet, you have its mnemonic seed then private key and you can import it to access to any chain supports by Metamask like ERC-20, BSC (Binance Smart Chain), and more.
With Kucoin account, you don't have its seed and private key, then your only chance is waiting for their support.