To resolve duplicate subscriptions, you’ll need to cancel one of the overlapping plans.
For more details, see below.
Where can I unsubscribe from Pastela Plus?
If you want to use in-app purchases to re-subscribe after canceling the duplicate plan, you’ll need to restore your purchases.
This will link the in-app subscription purchased with the signed-in Apple Account to the Pastela account currently logged into the app.
For more details, see below.
How can I restore in-app purchases?