Client Internet Connection

I am trying to setup an internet sharing device (Nexland ISB 100E). I have it set to 192.168.0.1. I can connect to internet from the server but I can’t get any of the clients to connect. I did an ipconfig/all on one of the clients. The IP address of the client was different than the IP address leased to it by the DHCP server. It showed that autoconfiguration was enabled on the client. None of the clients can access the server after the Nexland ISB is installed. The server is able to connect to the internet however.