• Power Cycle: Unplug the TV from the wall for about 60 seconds, then plug it back in.
• Check Internet: Ensure your Wi-Fi is connected and working by testing another app or running a network diagnosis in settings.
• Restart App: Force stop the app, clear its cache, and try again. 

• Update Software: Go to Settings > System > System Update (or About) to install any pending TV firmware updates.
• Update App: Long-press the app on the home screen to open its details in the Play Store and check for updates, or use the general update function.
• Clear Cache/Data: Navigate to Settings > Apps > See all apps, select the problematic app, and choose Clear cache, then Clear data if needed (note: data clears login info).
• Check Storage: Low storage can cause issues; check Settings > Storage and remove unused apps.
• Reinstall App: Uninstall the app and then reinstall it from the Google Play Store.
• Refresh Internet Content: In settings (under Setup/Network), find and run Refresh Internet Content or Update List. 
   

Troubleshooting the Internet Connection for your BRAVIA TV

• https://www.sony.ie/electronics/support/articles/00374616