Hi @John_Sheedy, welcome to the community and sorry to hear that the thermostat was displayed as a temperature sensor, instead of the thermostat, for you. It seems a couple of the thermostat integrations, including Ecobee, has dropped the Thermostat capability in SmartThings. Can you please try to add your thermostat by following steps below?
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In SmartThings mobile app, go to Automation tab, scroll down and find SharpTools smartapp, and tap it.
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In the device authorization page, scroll down to the bottom, and tap Next
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Tap
Which refreshable devicesand select your Honeywell thermostat device and then tap Done.
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Go to your SharpTools dashboard, and add this device again to the dashboard, tap
...and change the tile’s layout to Double Height Thermostat Tile
Please let me know if this helps. Thanks.

