Is it this app?
If yes, then take a look at this link.
https://community.homey.app/t/app-pro-heatit-controls-app-v3-6-2/49914
Is it this app?
If yes, then take a look at this link.
https://community.homey.app/t/app-pro-heatit-controls-app-v3-6-2/49914