This error primarily stems from a "piracy check" failure where the app cannot communicate effectively with Google Play Services. Common triggers include:
Re-download the High Contrast theme from the store and try re-applying your Hex theme. 3. Refresh Play Store Identity hex installer apk license error
In Hex Installer, go to the section > Fix HC Base and delete the High Contrast base. This error primarily stems from a "piracy check"
If the app opens but themes won't apply, resetting the base theme can help: Apply the in the Galaxy Themes app. hex installer apk license error
Sometimes the Play Store itself loses track of the purchase: Clear the cache and data for the app.
Open the Play Store and ensure you are logged into the used for the original purchase.