To pair the Lightwave Honeywell thermostat to the Lightwave app you must follow the instructions in the same order as below:

APP:

Press add device

Select LINK HONEYWELL HOME DEVICE

Name the thermostat as required (app needs to be ready for the pairing process)

THERMOSTAT:

Long press the physical button

PAr will appear

Toggle down to RF - Press physical button

Then toggle to COn - press physical button

Immediately press LINK on the app

Allow the app to scan and once found assign it to the correct room and hit save/done

If you do not see the COn option you will need to clear the memory of the thermostat 

HOW TO CLEAR THE MEMORY:

Long press the physical button

PAr will appear

Toggle down to RF - Press physical button

Toggle down to Clr - press physical button

Wait 10 seconds, remove the battery and restart the device.