I tried running sheltered from the f-droid repository with it not really working that well; refusing to show notifications during setup. I'm not sure of this is because it hasn't been updated in the last 12 months, or if its something on my end.
Any help is appreciated.
You may have to remove the play version before installing the F-Droid version.
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Doesn't google use different keys as well?
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Source: Google Support