You can change Keenetic main IP block in Home segment.
And also I known, if you connect Keenetic to another router which is same IP block, Keenetic is change DHCP itself. (I encountered it 3-4 times while installing it for my customers. Because they connected Keenetic to a router with 192.168.1.1, which is also 192.168.1.1. They said we cannot enter the interface. I saw the IP was 192.168.2.1)
https://help.keenetic.com/hc/en-us/articles/360000512800-Changing-IP-and-DHCP-settings-in-the-Home-segment