Google rejected that release due to Invalid Data safety form.
For Google, we have to disclose in the app privacy policy form that we use / collect emails. Though that's incorrect. We will appeal the decision.
It might happen to other Mastodon apps.
They rejected our first appeal but give us a hint. That's the registration page. But that doesn't change that we don't collect emails... If they refuse to understand, we will have to mention that we collect emails :-/