Hi there! I see your ECOVACS HOME app frequently shows that it's offline, though your internet seems fine since other devices are working well. That can definitely be tricky. To help you better, I'd like to ask a couple of quick questions first:

1. Which ECOVACS robot model are you using?
2. Are you connecting your robot and app via a single Wi-Fi network, or do you have multiple routers or networks at home?
3. Have you noticed if the offline status happens at certain times or randomly?
4. Have you tried restarting the robot or the app already?

This info will help me tailor the best solution for your Mac OS X 10.15.7 setup. Looking forward to your reply!

T50 pro omni

Thanks for letting me know you have the T50 Pro Omni model! Since the app often shows offline, and your internet is fine, let's try a few targeted steps to get your connection stable on your macOS 10.15.7:

1. Check Wi-Fi Network Compatibility: The robot and your Mac must be connected to the same Wi-Fi network. Also, note that many ECOVACS robots only connect to 2.4 GHz Wi-Fi networks (not 5 GHz). Please ensure your router is broadcasting a 2.4 GHz SSID and your robot and Mac are both using it.

2. Restart Devices: Power cycle your robot by turning it off, wait 30 seconds, then turn it back on. Also, restart your Mac and router to refresh connections.

3. Reset Robot Network Settings: On the T50 Pro Omni, press and hold the RESET button until you hear a voice prompt about network reset. This clears previous Wi-Fi info and puts it in setup mode. Then, open the ECOVACS HOME app on your Mac and reconnect the robot following the setup wizard carefully6.

4. Update the App & Robot Firmware: Make sure the ECOVACS HOME app on your Mac is updated to the latest version via the App Store or from ECOVACS website. Also, check the app to see if any firmware updates for the robot are pending.

5. Check Firewall or Network Settings on Mac: Sometimes, firewall settings can block communication. Go to System Preferences > Security & Privacy > Firewall and verify that ECOVACS HOME app is allowed to accept incoming connections.

If these don't resolve the offline issue, let me know exactly when the app status shows offline (e.g., during cleaning, idle, or remote access?), and if any error messages appear in the app. I can help guide the next steps!

Meanwhile, here's the official setup guide and manual links for your reference:
- Manual with network reset instructions: https://manuals.plus/ecovacs/t50-pro-omni-robot-vacuum-manual
- ECOVACS support page for T50 PRO OMNI: https://help.ecovacs.com/ca/support/deebot-t50-pro-omni

Would you like me to walk you through resetting the network settings now?