Deco-Tplink X60 only works at 5GHz. I have a setup with three Deco X60 in a mesh topology and everything was working fine for almost a year and then one of my X60 lost connectivity to the mesh. After multiple hours of troubleshooting i realized that it will only work if i move it closer to a main deco and as soon as I move it back to its original spot it will not connect with a red flashing light. Also, i realized only one band 5Ghz is available which to me is the root cause.

there are no logs, no place to troubleshoot... Just wondering if I can get some tips from this forum....