If you cannot change the range on the superhub because of the guest network (192.168.1.1) try the following;
- Change the IP of the router to 192.168.4.1
- Reboot router
- Reboot PC (or change IP manually if you have DHCP turned off)
- Log in to router on new IP
- This should then allow you to change the IP to 192.168.1.1
- Repeat steps 2,3 & 4
Your superhub should now be on your desired range.