Hi there! I see you're getting connection errors on myTuner across your TV, computer, and tablet, while other devices work fine. Let's figure this out together.

First, can you tell me a bit more about your network setup? Are all these devices connected to the same Wi-Fi network, or are they on different networks? Also, have you checked if your internet connection is stable on those devices outside of myTuner?

Meanwhile, here are some straightforward steps you can try to fix the connection error on each device:

1. Restart your devices: Simple but often effective—power off your TV, computer, and tablet, then turn them back on.

2. Check your internet connection: Make sure your TV, computer, and tablet all have active and stable internet access, preferably on the same network.

3. Close and reopen the app: Exit the myTuner app completely on each device and launch it again.

4. Clear app cache (if possible): On your computer and tablet, clearing the app cache can resolve corrupted data issues. On Windows, this might require uninstalling and reinstalling the app; on some tablets, you can clear cache via settings.

5. Uninstall and reinstall the app: Sometimes, a fresh install fixes glitches causing connection problems.

6. Power cycle your router: Unplug your router from power for about 30 seconds, then plug it back in. This can resolve network issues affecting multiple devices.

If after these steps the problem continues across your TV, computer, and tablet, it might be worth checking if there's an ongoing issue with myTuner servers or a recent app update that has caused connectivity problems.

Would you like me to guide you step-by-step through any of these, or do you want to share any error messages or behaviors you see on your devices? This way, I can tailor the fix precisely.