I upgraded my mesh network from an RE-815X to an RE-815XE. Working great. Now I am trying to delete the non-existant RE-815X from Tether and cannot see how to do that. For some devices there is a "...

I wanted a router and range extender that would work together as a mesh. Two things I wanted to accomplish: 1) Wired mode (Access Point) for the extender 2) Wi-Fi 6 network throught the house and yard