@Trobalabau 

Good news (I hope!).. I have persivered with TP (and Google). TP seem to have got the message, I got sales and marketing involved and pointed out that if they fix this they will have an excellent product that can head to head with Tado. (Money talks)..

They've acknowledged the issue and said they are going to work with Google to get a solution...

I'll believe it when I see it, but they do seem to now understand. In particular the Mode setting always saying 'Heat'.. pointless without and alternative 'Off or idle'..

I'll keep you updated..