Hi! I understand that your Zen Color app isn’t working on your Android 10 device using WebKit browser. To help you better, could you tell me more about what exactly is happening? For instance, does the app crash when opening, fail to load content, or does it not open at all?

Meanwhile, I can guide you through some basic troubleshooting that has helped many users recently:

1. Clear Cache and Data:
- Go to your device’s Settings > Apps > Zen Color > Storage
- Tap "Clear Cache" first, then "Clear Data"
This often resolves issues caused by corrupt temporary files.

2. Check if the app is disabled:
- In Settings > Apps, look for Zen Color and make sure the app is enabled.

3. Reset App Preferences:
- Settings > Apps > (menu button/three dots) > Reset app preferences
This restores default app settings and can bring back disabled apps.

4. Make sure you have the latest version of Zen Color installed. Sometimes updates fix bugs.

5. If the app was removed or disabled by Google Play Protect due to a detected issue, you may see a notice in Play Store under your profile > Manage apps and device. This sometimes happens pending negotiations between app developers and Google.

Have you tried any of these steps already? Based on what you tell me, I can suggest deeper solutions or alternatives.

Looking forward to your response!