Mempool shows that the current BTC mainnet transaction fee is 4s/b. A one-in-one-out transaction only takes less than 800sat, but the exchange fee is 6800sat. Can anyone solve the problem of retail mainnet withdrawal fees? #提币

Please help me, experts
Withdrawing from EUSD to BSC/BEP20, it shows that the withdrawal is successful, but it does not arrive. How to solve #提币