It is. Those fake accounts that Aurora Store uses stop working randomly. I learned the hard way to never rely on Aurora Store ever again and just use sandboxed Play Store on GrapheneOS.

In my experince, kind of. You can log in with your Google account and it works fine, but that negates most of the privacy benefits. Alternatively, only the search is broken with anonymous login, so you can set Aurora as the app to open play.google.com links and open them from your browser and it downloads and updates like normal.

Not here, i use it regularly for updates and install some apps. Just checked and updated some apps.

PS: I'm using a created account.