I'd also suggest adding the same to the wireless key
The above will then give you 2 separate wifi channels and clearly you'd need to reconnect to to this 'new' one. Having said that, none of our devices use the 5GHz spectrum as we find it very unreliable.
The other thing is, assuming you hubs firmware is 188.8.131.52.83.8.259 (bottom of every hub page) there is a known issue with certain devices. PN can push a newer version but they'd need to read your post first (as it's on a manual basis atm).