OmniTik share's IP-adresses

OK the Title may are not the best but i have following issue.

I have a OmniTik in my Roof for bridging with 2 SXT’s

My Router a other device (ZTE) should share the IP-adresses to the connected devices but however the OMNITIK does it at first.

The OmniTik has a type 192.168.88.XXX address so sometimes a new devices connected to my Network take a IP-address type 192.168.88.XXX but it should take a type 192.168.1.XXX

And i think the OmniTIK give this address how can i disable sharing IP-address from the OmniTIK ???

Go into IP → DHCP Server and disable the DHCP server.