First, confirm that:
- on your tablet, where you purchased the Premium option, the Premium features are working fine.
- your phone is registered with Google with the same Gmail address as the one used on your tablet.
If that is the case, it’s probably because the data in the Google Play Store app are corrupted. To repair that:
- Open your device’s Settings appÂ
.
- Tap Apps & notifications
See all apps.
- Scroll down and tapGoogle Play StoreÂ
.
- Tap StorageÂ
 Clear Cache.
- Next, tap Clear data.
- Re-open the Play Store & try your download again.
If this doesn’t solve the problem, try following Google’s advice by clicking on this link.