Question

I cannot activate the promo code for the mobile application on iOS platform. When About button is tapped and held, the window for entering the promo code does not appear. What should I do?

Answer

Open the application, go to Settings and make sure that there is no checkmark/expiration date or mark Purchased opposite the Premium Account option.

If so, close all the applications running in the background, install the available updates for the operating system of your mobile device, reboot the phone and try again.

If there is a checkmark/expiration date or mark Purchased opposite the Premium Account option, wait for the current subscription to expire and then activate the promo code. 

Additional information

You may also check the following articles: TextGrabber promo code activation and FineReader PDF for Mobile promo code activation.