Problems with Naim app

I have a Naim Star and a Muso.
The Naim app seems to not have a very good WiFi module as I often lose the signal and have to shut everything down and reboot.
Is anyone else having issues ?
Have you tried a factory reset of the Star? Also upgrade the firmware. Update app. 
When I did a firmware update to the Muso last remote would not work after that.
I unplugged everything and started over with resetting.  No luck.
The Star is fine.
 Thanks for your help.
I had issues like this once - random dropped connections on wi-fi devices. Eventually, I replaced my Netgear router with a Cisco unit which solved all issues. $90 well spent.
I’m looking at replacing my router with a Netgear Nighthawk.
 Thanks for your input.
i will take both posts suggestions and buy a new router today.