If this happens, please contact us via firstname.lastname@example.org and explain the problem. Tell us on which device (model) and operating system you have installed the application (Windows, MacOS, iOS or Android) as well as the version of the application (you can see this in the options menu, e.g. it says “2.20.01”).
If we cannot find a solution, you can request a refund. For details, see “I want a refund for my purchase. What do I need to do?”.