What am I doing wrong………

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Hi,


Have 2 zones setup with wired thermostats and timer to boiler set to on. HW on the same timer and not controlled by Tado is set to auto.


Installed the thermostats on Friday and all good. On Saturday I installed TRV’s upstairs and since then the upstairs heating hasn't worked. All TRV’s are set to 20 and show 20 on the display. The thermostat however shows a snowflake with a down arrow (configuration update) and it’s been like this since yesterday (maybe before but 1st checked yesterday). Tried resetting, removing batteries etc but just defaults back to configuration update. 


While this is ongoing downstairs with no TRV’s works fine. What am I doing wrong as this is starting to drive me insane + no heating upstairs for 24 hrs!


Pictures attached of thermostat and zone settings. 

Nickd911