Email verification
The email verification system partially works, after managing to add my email and receive a confirmation, it sends me a no reply standard confirmation email with a link. After pressing the link it leads me back to the app but says it cannot verify. When down holding on the link in my email, it shows that its invalid dynamic link, that is therefore blocked. It suggests the path to the provided URL for the application and your project does not work properly i suppose. I dont know much about this but hopefully this helps you reconfigure your app