Hi, I see you're having trouble with the Total Connect Comfort app not reaching the thermostat server even though your internet connection is working fine. Let's work through this together.

First, to clarify:
- Is your thermostat showing online status on the device itself?
- Are you able to control the thermostat locally (directly on the device)?
- Have you recently changed any passwords, Wi-Fi settings, or done firmware updates on the thermostat or router?
- Which version of the app are you using, and have you tried restarting the app or your phone?

Meanwhile, here’s a step-by-step approach to try:

1. Check App Permissions:
On your Windows device (or mobile if you use the app there), ensure that the Total Connect Comfort app has all the necessary permissions enabled, especially network access and background activity.

2. Restart Devices:
Power cycle the thermostat and your router — turn them off, wait 30 seconds, and turn back on. This often resets connection hiccups.

3. Verify Network Stability:
Since the internet is working, confirm your Wi-Fi is stable, and the thermostat is connected to the correct network SSID without restrictions such as MAC filtering.

4. Re-login to the App:
Sometimes credentials can get out of sync. Log out of your app account, close it fully, then log back in.

5. Check for Firmware and App Updates:
Make sure the thermostat firmware is up to date and that you have the latest version of the app installed.

6. Reset Wi-Fi Settings on Thermostat:
If the thermostat is online but app access fails, try resetting the Wi-Fi connection on the thermostat and reconnect it to your network. This is different from a full factory reset and often resolves server access issues1 2.

If these don’t solve the issue, sometimes Honeywell servers may have temporary outages or maintenance periods that cause connection drops, so checking their status page or social media might help confirm.

Can you try these steps and let me know what happens? If the problem persists, we'll dig deeper into advanced troubleshooting or consider account/server issues.