@David-TP

@Lancslad1 i would make sure your network is set up using one of the examples in the post below https://community.tp-link.com/en/home/forum/topic/98898 and that your network switch is compatible with...

@murphygerrym You can also remove it via the deco app. From the network tab click on "Everything looks good." click on the deco you want to remove > At the top right look for the three vertical dots...

@ShapePivot You could buy a Ethernet cable tester to test each cable to see if they are good or bad. Trying to find the exact one that user bought in the post i linked to you because it was able to...

@ShapePivot Kevin May I have the hardware version of your Deco X80 units? You can find this info on the bottom of your deco units. While the app and or web ui may show the firmware is up to date this...

@Blumr2 Do you have a link to the tester you purchased? I would like to grab one for myself :)