Hi! I understand you're having trouble with changes not saving on your Hive app schedule. Let's get to the bottom of this together.

To start, could you tell me a bit more about what's happening? For example:
- Are you able to make changes to the schedule in the app, but when you exit and go back in, the schedule reverts?
- Is your Hive Hub connected and showing as online in the app?
- Have you noticed any error messages when attempting to save changes?
- Are you using the latest version of the Hive app on your device?

Meanwhile, here’s a step-by-step approach we can try to resolve this:

1. Check Internet Connection and Connectivity
Make sure your phone and the Hive Hub both have a stable internet connection. Without this, changes might not sync properly.

2. Restart Your Hive Hub
Unplug the power supply from your Hive Hub, wait about 30 seconds, then plug it back in. Give it a few minutes to reboot and reconnect online. This can refresh the device and help sync settings.

3. Check Time and Time Zone Settings
Sometimes, if your phone’s or the Hive Hub’s time settings or time zone are off or not set to automatic, schedules might not save correctly. Verify that both are set to automatic and reflect your current region accurately.

4. Update the Hive App
Ensure your app is up to date in the Microsoft Store. Outdated apps can have bugs that affect saving schedules.

5. Try Reapplying the Schedule
After the above steps, open the app and try to change your schedule again. Be sure to save changes explicitly (often by tapping 'Save' or 'Apply') before exiting.

6. Clear App Cache or Reinstall the App (if applicable)
If issues persist, try clearing the app’s cache or uninstalling and reinstalling the app to eliminate corrupted settings.

If you’ve tried some or all of these already, please let me know which, so I can suggest deeper troubleshooting steps. Sometimes, behind-the-scenes syncing issues or account problems might be involved.

Does this sound like a good plan? I’ll guide you through any step you need help with.