Firebase & GPGS working in debug, but not in published closed test

I have an android app using Firebase & GPGS and everything is working great when I install the app directly from the Unity editor onto my own device(s) - but it just stops working in the published closed test through the play console, when downloading the same .AAB through the play store

GPGS returns a general error and Firebase returns 403 permission denied - the API key, app-id, Google Cloud project, and package name all appear to be correct, and I’ve double checked the SHA-1 on the permissions to that API key.

So I’m left wondering if there is something else I might have missed that needs to be set in Unity for google services to work properly on a published app, any help is appriciated.

I’ve been at it all day, but apparently the Google play console gives you a different fingerprint - I’ve been using the one from my own keystore :sweat_smile:
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