BiFi supports both Ethereum and BSC mainnet. If you set BiFi webpage to Ethereum Mainnet but have MetaMask set to a different network, there will be an error. Make sure you set the same network for both MetaMask and BiFi.
Swapon the first screen of Metamask.
Select A Token, search for "BFC".
Etherscanto make sure it is the correct BFC token.
Etherscanlink leads to the same BFC token address link as below.
Review Swapto review your swap.