Hi there! I see you're having trouble purchasing the Pro version of the ArtWorkout app on your Android 10 device using WebKit browser. Just to make sure I fully understand, could you tell me if you're trying to purchase directly inside the app or through a website? Also, are you seeing any error messages when you try to complete the purchase?

In the meantime, here are a few common steps we can try to get this sorted out:

1. Check Internet Connection: Make sure you have a stable internet connection because purchases require connectivity.

2. Clear Cache and Cookies of Your Browser: Since you’re on Android 10 with WebKit browser, clearing cache can sometimes resolve purchase issues:
- Go to Settings > Apps > WebKit (or your browser) > Storage
- Tap "Clear Cache" and "Clear Data"
- Restart the browser and try again.

3. Update the App & Browser: Ensure that both your ArtWorkout app and your browser are updated to the latest version to avoid compatibility issues.

4. Check Payment Info: Verify that your payment method linked to your Google account is valid and has sufficient funds.

5. Try the Google Play Store Purchase: Typically, ArtWorkout Pro subscriptions are done via in-app purchase through the Google Play Store:
- Open Google Play Store app
- Search for ArtWorkout and open its page
- See if there's a “Buy” or “Subscribe” option to purchase Pro

6. Restart Your Device: Sometimes a simple reboot can fix temporary system glitches.

If you have already tried these or if the problem persists, could you please share what exactly happens when you try to buy Pro? For example, an error message, payment getting declined, or the purchase button not responding?

I’m here to help you get the most out of ArtWorkout!