Have you tried checking if there are any compatibility issues with the operating systems on these devices? It's possible that the app was developed specifically for Windows and may not be optimized for other platforms.
If you're still having trouble, you could consider reaching out to the app developer or technical support team for assistance. Also, if you're looking to purchase cheap windows keys, I'd recommend doing some research and checking out reputable sources to ensure you're getting a legitimate product. Good luck with your app troubleshooting!