EasyMesh satellite loses internet connection, requires frequent restarts
I have an Archer AX4400(US) Ver 2.6 router that is connected as an EasyMesh satellite to my primary router, an Archer BE550 (fw version 1.0.8 Build 20240226 rel.61914).
This configuration has worked flawlessly for several months.
However, in the last few weeks the AX4400 will occassionally lose internet connection. And I mean internet connection, specifically. All lit LEDs on the satellite router are solid green except for the LED that shows the status of the Internet WAN connection; it's orange. Once this happens, the satellite router will remain like this permanently until after I physically reboot it.
The primary router maintains a reliable internet connection and all devices connected to it experience no interruptions.
The range between the two devices is only 20 feet through an open doorway so range or obstructions shouldn't be an issue. "Network Optimization" shows "Perfect" channel congestion. "Network Diagnostics" show no issues either.
Any help? I bought these devices specifically to use EasyMesh in this way. This instability can't continue.