Had 4 HS200 switches, all working for over a year with automations in SmartThings based on Samsung Motion sensors.

Added 1 HS210 and 2 HS200's today. Now nothing is working in SmartThings, even the old ones that worked up until I added the new switches.

They all work in the Kasa app.  

When I try to add the new switches to SmartThings, only the 4 old switches show.  I removed 1 to try to re-add it, and not it won't show either. (Kasa account is linked.)

Have tried factory reset on the 1 I removed, and it works in Kasa again, but won't import into SmartThings.

Suggestions?