Open the Premium or subscription screen and choose Restore Purchases, if available. Make sure the device is online and that you are using the same Apple or Google account used for the purchase.
Scanner App does not use an in-app account login for the core experience. Store purchase restoration is tied to the platform account that completed the transaction.
If the purchase is still not recognized, contact support with the store receipt or transaction ID. Never share your store password, verification code, or payment card number.