I have been having issues with "new devices" not being able to connect to the wireless network after a while.
This happens every once a day and can only be resolved if I factory reset the network and reset up all the points.
I now have 3 routers in set-up this way: Modem > Router > Switch > 2 x Routers as Points.
Have gotten different diagnosis from different support chat but I've tried:
* Set-up properly by letting Wifi points take on lower IP range i.e. .20 to .30 instead of higher IP ranges.
* Changing network names and password to be alphabets and numerals only.
* ISP has helped to switch Optical Network Router to bridge mode.
* Tried using a different Wifi router as primary router.
I still have 2 other Wifi routers and 2 other Wifi points purchased but not yet added to the network. Can't seem to figure what's wrong and refraining from adding more to equation.