I am trying to connect a second router to the network, an Asus RT-AC68U flashed with the ExpressVPN firmware - IP (before flashing) 192.168.1.1. I flashed the Asus router by connecting it directly to my computer by ethernet cable.
The flashing of the Asus appeared to be successful as the setting-up process started correctly and I was able to make some changes, such as wifi SSID. However when I was asked to connect the two router together by ethernet cable everything just hung.
I had thought that I could change the Hub 3.0 IP address to 192.168.1.xx so that the two routers had compatible IP address but this appears to be impossible as the 1.xx is reserved for the guest network.
I would therefore like to change the IP address of the Asus to 192.168.0.2 but I can find no way of doing this.
As you can see I am way out of my depth so please make all answers very simple and clear.