Unable to gain access from the DHCP server

EPMP 1000 models of the product I received today. 
Cyberoam UTM in our network with internet access is controlled .
Our server running Windows 2008 R2 operating system .
DHCP function in a healthy manner is also working on the server.
Wireless access points on different brands in our network is working smoothly.
However, when this new product, network access provided via , the connected computer can not obtain an IP address via DHCP .
If I assign a fixed IP address can access the computer problem with the network .
EPMP the DHCP function is that the rope gets defined for the network settings and can receive IP automatically from the server.
What could I have done wrong?


For SMs, go to Configuration / NETWORK and enable DHCP server below SM