I remember it was like this when I installed it on my Android phone:
"Do you want to install this application?" => Click "Install".
"Play Protect doesn't recognise this app's developer. Apps from unknown developers can sometimes be unsafe." Click => "Install Anyway".
"Play Protect hasn't seen this app before. To protect yourself and others, send it for a security scan." You can tick "Always send unknown apps" and Click => "Send" if you want.
I can't un-scan an app by Play Protect so my apologies for not being able to send you any screenshots to help.
And also thank you for checking out my cool little project from last year!