Can you clarify how you had the Tuya devices connected to SmartThings?
You’ll need to have the devices connected into SmartThings (or Hubitat) in order to use them in SharpTools dashboards.
Tuya recently announced a partnership with SmartThings, so I would expect that we will see better official support moving forward. For example, a Globe Life integration was recently announced for SmartThings under the Tuya brand and people have had success with that.
From what I’ve seen, the Globe Life + SmartThings integration still seems to be a little rough around the edges. But it’s better than nothing!