Never give your wallet password or private key to anyone, you could have your crypto stolen by scammers.
The administrators of CowSwap.Finance never asks you to give them your passphrase or the private key in your wallet.
Beware of scams!
How do I set up my wallet on Binance Smart Chain?
Trust Wallet: When you go into the DApp in the top-right corner you can see the different blockchains available, click on it then choose Binance Smart Chain Mainnet.