Always asking for ERC20 Token

HI this is a fantastic plugin. I have been testing this plugin on BSC Testnet for some time, creating tokens sending and buying on testnet, have added the ID from the external site, but.
I often get the error that I need to fill in an ERC20 Address, although I am on BSC Netwrok. Is their any idea from yopur side, it does not matter if I am creating the ICO oder if I am sending to the ICO on the uy page. Please help us fix this issue because it would prevent people from buying, thanks in advance