I too had the same issue where the H1 wireless switch just toggles all my lights and doesn’t show up in Smartthings as a device. Just want to share how I finally got it paired and working in smartthings.
Prerequisite: Install driver from [Edge] Driver for Aqara Switches and Remotes
- In app, add device
- Scan nearby
- At the switch, press and hold the right button until the blue led flashes 3 times, and release
- Wait until the led flashes once
- Press and hold until the led flashes, release, then quickly press and hold again
- Repeat step 5, keep holding between flashes until you either see 2 flashes or the switch showing up in the app
- If you see 2 flashes and the switch doesn’t show up, repeat 3 to 5
I think it took me about 20 tries to get it to show up in the app, this is the third time I re-paired and it still works. I observed that holding the button between flashes seems to extend the pairing period. Hope this helps.