If you are having trouble accessing the advanced features after the upgrade, please try the following instruction to refresh your account:
- Open the Apple App Store on your device and log in with the Apple ID you used to make the purchase.
- Re-login PDF Reader iOS with your Kdan ID.
- Click on "Restore Previous Purchase" on the profile page.
**Please repeat step 2 with other potential email accounts if you fail to access advanced features on the first try. If you signed up with a third-party account (for example, "Sign in with Apple), please also try logging in with these accounts.
If the issue remains, please contact us at email@example.com with the following information.
- A screenshot of your profile page
- All of your potential email addresses
- Your invoice