The short story: If your WYZE devices (original smart plugs) stop working or go offline, try rebooting your router.
The long story:
I have 2 of the original WYZE Plugs, not the newer blue tooth version.
I bought them new 2 months ago.
Set up was counterintuitive to the directions, but I got them set up on the WYZE app and ALEXA.
After a month of use they both stopped working at the same time. I had to delete them from the WYZE app and set them up again. After another month they both stopped working again, this time showing a slow blue light flashing. The app showed them as offline. This time I could not get them set up. The app showed connected but blue light flashing and neither responded to WYZE app or Alexa commands.
Since they both stopped working at the same time, I thought it must be something common to both. My router? The router has not caused any interruption for all my other wireless devices; 2 mobile phones, 2 PC’s, Ring Doorbell, 2 Gosund Smart Bulbs, Google Home, Echo Show. And the 2 WYZE plugs are closer to the router than most of the other devices.
Regardless, I rebooted my wifi router. Then set up the WYZE plugs again. They are now working.
What I don’t understand is why the WYZE plugs are the only devices out of 11 that go offline and need a router reboot? Not very dependable devices if they are used for home security when you’re on vacation.