Firebase App Distribution Android - getting error that app package name has to match Firebase

[Derrick Chao]

I realize this is partly my fault, but my app's package name and Firebase app's package name have never matched and it hasn't been an issue. This morning I tried to upload a new APK and I am getting a big red error message:

There's been an error processing your upload. The APK package name <Android app package name> does not match your Firebase app's package name <Firebase package name>. Change the APK package name to <firebase package name> and retry the upload. If a Firebase app already exists for <Android app package name>, upload your APK to that Firebase app instead.

Did something change on the Firebase App Distribution side that now prohibits this? 

If so, just to confirm, if I create a new Firebase app with the matching package name and then update the google-services.json, will that break my existing users' apps access to Firebase in any way that still have the old package name?  Thank you. 

[Julien Le Pocher]

I'm having trouble accessing App Distribution tonight, so there may be some maintenance work going on, which could have impacted what you experienced this morning.

[Derrick Chao]

I got it to work by creating a new app within my project, but now it seems my users have to accept the new invite and, more importantly, there has to be a different app for each product flavor if you're using applicationIdSuffix?