Don't activate Google Play App Signing in your Google Play Console at this time!
Below we explain why you should not activate this yet!
1. About "Google Play App Signing"
Google introduced a feature called Google Play App Signing, that lets Google Play manage your Android keystores. For more info about Android Keystores, see here.
Twixl Publisher doesn't support this feature currently but will provide support for it later in 2021.
2. How to avoid activating this option?
Activating Google Play App Signing is done in the Google Play Console. It's very easy to do this accidentally, as Google suggests that you activate this option, as soon as you are navigating to Release Management (where you upload your Android app to the Google Play Store).
3. Consequences of activating this option
Activating this option currently makes your Google Play Developer account incompatible with Twixl Publisher! You won't be able to upload new Twixl apps anymore, or update existing Twixl apps.
Activating Google App Signing is also irreversible!
Important: App Signing opt-in is permanent
Once you've enrolled your app in Google Play App Signing, withdrawal is not supported. To preserve the security of your app signing keys, we don't have the ability to remove keys from the secure server.