@Xentaur It is sorted. The problem was that the 6th unit, which was ordered separately from the other 5 units, came flashed with the US firmware (it's labeled an EU unit). I re-flashed the unit with...

We set up 5 EAP110-Outdoor HWv3 easily and quickly and placed all the units into the roof cavities of each of the chalets and base primary residence and everything works. We thought we'd get decent...