The Tuya/Smartlife integration is lacking to say the least.
The Tuya integration works better than the Smartlife integration for some reason.
If you open up each device in the Tuya/Smartlife apps using the edit icon it will tell you which 3rd party integrations are supported. Alexa and Google integrations are common, but Smartthings is not supported by many devices.
One work around for bulbs, plugs and switches is to create tap-to-run on and off automations in the Tuya or Smartlife apps and these automations generally get imported into Smartthings even if the devices don’t get imported.
One problem is that these on/off automations will show as offline in Smartthings.
You need to link these automations to virtual switches using WebCore or Sharptools to make them usable.
Not sure if that would work for contact sensors. It doesn’t work for cameras.
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