I bought my RE200 about on June 30, 2018 (so it might still be in warranty).  Set it up properly, and enjoyed its extended range.

A sequence of erratic events happened yesterday:

1.) the main router was accidentally turned off (so I could still see the two extended channels, but there was no data)

2.) in my bewilderment I pressed the "search" button on the RE200.  Got nothing.

3.) I unplugged RE200, and then plugged it back in.  The two lights (power and range) are on, but I can't detect the two RE200 channels (2.4GHz and 5GHz) anymore.

4.) I realized the snafu is on the router, so went to turn the router back on.

5.) now I can see the router, but I still can't see RE200.

6.) tried RESET with pin.  Got all lights to flash.  The 2.4/5GHz flights flahsed red once.  Now only power and range lights are on.  Still don't see the channels.

7.) no matter which method I try (via manual or Tether App), I do not see the RE200 device anywhere.

The only thing I have not tried is uing a LAN cable to connect to it.

Did the device "lock" itself up?  Or maybe it's a firmware issue, I'm not sure.  But how do I proceed, if I can't detect the device at all?