I have been having this weird issue lately. I have two RE450 extenders connected to my network. They are in Onemesh mode with my Archer AX73 wireless router. When I use the Tether app to look at my RE450 devices they keep appearing and reappearing. It appears to have started after upgrading the firmware. My Archer AX73 appears every single time without any issues. Before upgrading the firmware I never encountered this issue before. I was able to see both extenders on the Tether app and make changes to it without any issues. Now the extenders appear and disappear. When I try to access them sometimes I am successful, however, it takes a very long time for them to load and show their settings. Sometimes I get disconnected and unable to change their settings. I have tried everything, even fully resetting my router and the extenders. Yet the problem persists. I have also tried all the different ways of connecting my extender to the network and so far have had no success. I even removed them from the OneMesh configuration and placed them as an AP, still the problem appears. How can two identical RE450 extenders have the same exact issue? It appears to have happened after upgrading their firmware. Any help or guidance will be greatly appreciated. Thank you.