Google Play hosts the subscriptions and is responsible for the purchases.
- Kurviger app, installation, subscription, update, upgrade [Kurviger Knowledgebase]
- Kurviger App, Installation, Abo, Update, Upgrade [Kurviger Knowledgebase]
Apps can only request Google Play for the active subscriptions.
Error means that Google Play cannot provide the subscriptions.
Is it an original Android with Google Play or some custom rom?
The image does not display the ads either → Google services do not work properly.
Is there any blocker app installed limiting Android / Google services?