All devices gone (September 2023)

[Bill_Hull]

I’ve been using smart things with Alexa for a couple of years now. All of a sudden all my devices are gone on smart things. I’m trying to add them back in and can’t even re-add the hub itself to the smart things app.
I’ve spent half a day and very frustrated. Any help would be really appreciated

[jkp]

I would recommend contacting ST Support directly and let them examine the issue. Have you reset your hub at this point (not recommended until you contact Support)? Does signing into my.smartthings.com show any devices or hub? or the Advanced Web App?

[JohnRichard (John Nadeau)]

Hey @Bill_Hull

Check out this post

When in doubt, REBOOT (power-cycle) YOUR ENTIRE HOUSE

We all know the benefits of a therapeutic power-cycle of a SmartThings Hub, Computer, Router/Modem, SmartTV, SmartPhone, etc. Just wanted to share a solution for an odd SmartThings behavior we experienced. Your results may vary, but I would strongly recommend following the Step-By-Step below if you’re experiencing communication issues that aren’t resolved by the traditional power-cycling/reboots. Odd Behavior: We have a house with 8 Schlage Smart Deadbolts, and various other z-wave and wi-fi devices. All 8 Schlage Locks went offline at once and would NOT come back online. Upon power-cycling the Locks, they would come online, but wouldn’t respond consistently to commands and were very sluggish (at best). Tried the traditional fixes… like in this order: Pull Batteries from Schlage Lo…