Once you plug in the AP in your network and if your router/switch has an active DHCP server it will assign a new private IP to the AP and hence it will change from 192.168.0.1 to assigned one. I am doubting your AP has taken another IP and also possibility that it has already been setup by someone ? You will need to first identify the IP that the AP has to get you any further with setting it up.
Is this a lennear home ? If Yes, effective 22nd July, Lennar Home users have a dedicated support provided by Wave Technologies. In order to receive technical assistance please contact +1 877-676-8641 to reach Wave Technologies supporting Lennar customers.