Your Metamask is set to testnet but not mainnet?
I guess you should check a few details and verify:

Network Name: Binance Smart Chain

New RPC URL: https://bsc-dataseed.binance.org/

ChainID: 56

Symbol: BNB

Block Explorer URL: https://bscscan.com

Let me know if the above details are correctly implemented in your Metamask while adding BSC network in it.