Thank you for taking your time to get in touch.
I am very sorry that you are having problems with your father in laws Wi-Fi connection. My general advice would be to factory reset the router but pressing something small and thin into the reset hole for around 20 seconds.
If this doesn’t work please can you ask you’re farther in law to contact us so we can look into this further with them.
| Josh Berriman|
Plusnet Help Team