Unable to change DHCP settings on TL-WR940N
Just a heads-up for anyone coming across the fault reported here:
There is a bug in the firmware that means that if the router ends up with a LAN other than 192.168.0.0/24, the you're unable to edit the DHCP settings. They are greyed out.
This occurs is you connect to an existing 192.168.0.0/24 network and the router switches to a LAN of 192.168.1.0/24
AFAIK, there is no way to get around this bug aside from disconnecting from the 192.168.0.0/24 upstream network, change LAN to 192.168.0.1/255.255.255.0, change the DHCP settings, reconnect and hope it works on the new LAN.