Bit of a strange one this. Since last Friday my connection drops around 6.30pm. The router (superhub ac) stops responding to a ping, won't assign an IP address and asks for a password if trying to connect to wifi. Devices will show the SSID but rejects the password when entered (but should allow devices to auto connect anyway).
A reboot doesn't do anything but leaving it overnight sometimes lets things connect in the morning. As an example it's been working ok all day today with three devices on Ethernet and a dozen on wifi, at 18.45 the router stopped responding, can't get to admin page on 192.168.0.1 or 192.168.100.1 and can't ping it.
The tech team want to send an engineer saying there's congestion in the area but can't get their head around the fact that the router should work internally separate to externally. Apparently if the service is congested then the router can stop working internally too. At a loss as to where to go next to be honest. I suspect an engineer will see it working for a few minutes and not do much. Any ideas gratefully accepted!