When I first power up my Halo WiFi / Halo Combi RF smart interface has all 4 green LED’s showing solid permanently and is not working

Please press the pin reset on the front of the Smart interface. This should reset the unit. If this does not work, please turn the power off to the boiler for 5 minutes. This will fully reset the unit.  If your smart interface is installed externally from the boiler, unplug the power supply for 5 minutes