Had my devices (3) for a couple of years, no issues. Until recently. I have one in the living room, one in each bedroom. Main Bedroom device stopped working a few weeks ago, and has been flashing Yell

Not sure on the hardware version, sorry. Bought last May, works fine, tonight I decided that I wanted to rename my Extender, and have it worked as an actual extender, rather than a different SSID. The