Questions

I have an existing Android app on Google Play, currently a TWA built
with PWABuilder. Package name is com.peerpressureapp.twa. It uses Play
App Signing, so Google holds the app signing key, and I have the
original PWABuilder upload keystore.

I've now got a Median license and want to rebuild the Android app with
Median so it updates the existing listing rather than creating a new
one.

My understanding from your docs is that Median signs AABs with your own
keystore, and there's no way to upload my existing upload keystore
through App Studio. If that's right, Play will reject my upload as a
signature mismatch.

What's the correct path here? Options I can see:

1. Request an upload key reset in Play Console and register Median's
   keystore certificate as the new upload key
2. Obtain your keystore so I can verify the certificate first
3. Something else you'd recommend

Also, is the keystore per-app or shared across Median builds?

Not urgent - I have until November for the Android 16 target API
requirement.