Can't Transfer BNB from

I have added the Binance Smart Chain Network to Metamask, but when I try to transfer BNB, I get the error:

The withdrawal address format is wrong. Please check the withdrawal address length and character content and try again

I clicked the account number at top of Metamask and pasted it.
Under Network in Binance, it has only option “BEP2”. A tutorial I watched showed BEP20.