Bit more information on this which I am still experiencing to a degree on the N7 which definitely appears to be the bad boy in all of this.
I ran the Pilotaware on a Pi 3 official power supply following the previous suggestions.
The N7 is still reticent to connect to the PA WAP but eventually does so after about 30 seconds 'awaiting IP allocation' or similar. Accessing the web server part of the PAW is very slow in responding. The Skydemon connection appeared to hold up well though.
If then, with the N7 still connected, I connect with my phone, the N7 disconnects in Skydemon (wifi stays connected though), unable to reconnect to 'FLARM', the web server is inaccessible and the phone's use on Skydemon with Flarm is also flaky with no web server response. The only way to resolve this is to reset the PAW.
On resetting the PAW, the phone connects fine and I left Skydemon running stable for an hour seeing ADSB targets. As soon as I try connecting the N7 though, the phone is dropped out of Nav in skydemon.
I believe it should be no problem at all connecting multiple devices to the PAW? Hope this helps anyone with diagnostics or maybe the next release will solve the issue.
Vic