I see this through the picture, and I also see that you are using the mobile phone. Are you using a web browser on the mobile phone or is there an application for the tool?
I am using Chrome browser on Windows 10 and the menu does not appear for me, this is what appears for me only:

            

I don't know why, but as I mentioned above, although there was no BSC in the list, it was able to recognize my wallet.