Keep Me Cozy II SmartApp -turns heat on but not off?

I was able to create a scenario where the HeatIt Thermostat turns on my floor heating when a Samsung MultiSensor reads below 22C/72F.

The Thermostat setting spikes to 34C and my heating system turn on.

However, the heat stays on and the thermostat stays at 34C even when the multisensor read 27C/80F

Any tips or pointers are appreciated. Thank you.