Android: Restart or resubscribe to a subscription
Restart or resubscribe to a subscription – on Android devices.
Tip: Some subscriptions may not be available to resubscribe.
If your subscription is canceled but still active:
1. On your computer, go to play.google.com.
2. Make sure you’re signed in to the correct Google Account.
3. On the left, click My subscriptions.
4. Select the subscription you want to resubscribe to.
5. Click Resubscribe.
If you cancel your subscription and the remaining time on your subscription has expired, set up your subscription again.
See full instructions at https://support.google.com/googleplay/answer/7018481