This situation may be that there is something wrong with your software. I usually install software in the application treasure, all of which are green and genuine software. You can reinstall your software in the App Store, install the App Store on your computer, connect your mobile phone to your computer, open the App Store to match your model, and then search for the software you want in the App Store. You can also directly search for keyword downloads. You can try. I hope my answer can be adopted by you.