ADT came and tried to connect directly to the Orbi AC2200 via the ethernet out port

Hello,

Sketchy Wireless Connection: If your wireless connection is intermittent, there are a few things you can try to improve it:

Make sure your Orbi AC2200 router is placed in a central location, away from obstructions like walls or large electronic devices that can interfere with the signal.
Update the firmware of your Orbi router to the latest version, as new updates often include bug fixes and performance improvements.
Change the wireless channel on your router. Sometimes, neighboring Wi-Fi networks can cause interference. Switching to a less congested channel can improve your wireless signal quality.
If possible, try connecting to the 5GHz frequency band instead of the 2.4GHz band. The 5GHz band usually offers faster speeds and less interference.
Consider adding a Wi-Fi range extender or access point to improve coverage in areas with weak signal strength.
Ethernet Connectivity to ADT Gateway: Since connecting the ADT Gateway directly to the Orbi router's Ethernet port didn't yield any signal, it could indicate a hardware or configuration issue. Here are some steps to try:

Test the Ethernet cable by connecting a different device to the same port on the router. Ensure that the cable is securely plugged in on both ends.
Verify that the Ethernet port on the Orbi router is enabled and properly configured. Check the router's settings to ensure the port is not disabled or set to a different mode.
Restart both the Orbi router and the ADT Gateway. Power cycling the devices can sometimes resolve temporary issues.
If possible, try using a different Ethernet port on the Orbi router or connecting the ADT Gateway to a different router if available.