I have now sent this router back to the supplier, because after a disappointing conversation with support here, it appears the E3372 dongle is incompatible with the VR400 Which leads me to my next...

I'm hoping someone can help here, I have this loverly new Archer router VR400 with 3g/4g fallback and a brand new Hauwei E3372 4g Dongle. Both work well indipendantly, however the router will not see...