I don't want my email recipients be able to enter the app by themselves, anyway I can remove this?

I am trying to build a dynamic email view like this one shown in the help center article. But whenever i sent as a dynamic email, the side-by-side format (requester santosh@demo.com) disappeared and the font size is also too large but minimum font si...

What is the best way to learn AppSheet? Is there any resource that can help me learn AppSheet? Thank!!!