FLStudio Groove App in the Windows Store has not automatically updated, you can manually do so as follows:
1. Go to the Windows Store.
2. Click on ‘ Account ’ (top of the screen)
3. Click on ‘ My apps ...
FLStudio Mobile Android:
Please check the Google Play Store support on this subject: Download previously purchased & downloaded apps For FLStudio Mobile iOS:
Please check the Apple iTunes support web site on this subject: Downloading past purchases ...