Please note that cross-chain transactions between TRON, Ethereum, and BNB Chain require a small amount of fee to submit the transaction on the chain via BTTC. Your assets will not be retrieved if you transfer them to an exchange address or a contract address since such addresses do not have a private key for you to sign.
If you still have questions on how to use the BTTC cross-chain bridge, click on Cross-chain User Guide for more help.