Steps to fix the issue:
Make sure you're signed in with the same Apple ID used to make the purchase.
Open the A1 PDF Editor app.
Go to Settings → Subscription.
Tap on “Restore Purchase”.
This will sync your purchase with the app and remove the trial expiration message.
Still seeing the message?
Ensure your internet connection is active.
Restart the app and try restoring the purchase again.
If the issue persists, contact App Store Support to verify the transaction.
By restoring your purchase, you can regain full access to all premium features without being charged again.