I noticed when I was originally configuring this router that the IP address range would reset from my configured 192.168.1.x to 192.168.4.x.

This happened again last night when there was an internet outage in my area. I went to bed and at 2am the router decided to change the configuration again. 

This is problematic because I have my devices reserved with specific IP addresses, one of which is my DNS server. When the IP address range changes the Internet settings of the router do not change (continue to point at 192.168.1.x DNS Address) but the address reservation of ALL the devices changes to 192.168.4.x including that of my DNS. So now the router is attempting to resolve addresses with a server that it is unable to access. 

Can TP-Link please resolve this issue? Our settings should not randomly reset themselves.