I wanted to give an update. After chatting with support a few times and trying a few different things: 1.) Traded the main unit with the sattelite unit 2.) Tried different ethernet cable for backhaul...

Were you able to verify that it was hardware version 2.6 from Amazon?

Returned to TPlink or retailer?

I am having similar issues. Sporadically the network drops and it's not an issue with the fiber. I have hardware version 1.6 purchased less than a month ago. How can I know if it is the hardware...