Tado app turns off radiator without me telling it to

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Hi,
I was feeling cold in the living room yesterday so checked my tado app and it showed that the living room and dining room where both “off until you cancel” the temp was 17 instead of the 19 it is set to. I cancelled and checked the schedule and there was no reason for it to have done this. Well it has done it again today so wonder if there is any reason why it would be doing this?