As for the NAT – just make sure no interfaces are listed under “NAT Enabled Interfaces” to disable it.
what does a trace route command look like on the clients that cannot connect to the the 192.168.0.0/24 network.
so if you are running windows on a computer with an ip address like:
192.168.2.10 that cannot reach 192.168.0.10 then
open the run box
and see where the traffic stops. Are you sure the client is using 192.168.2.223 as its default gateway?