OpMenager only displays some info for WatchGuard firewall

OpMenager only displays some info for WatchGuard firewall

We have a WatchGuard Firebox 500 firewall but we don't see the CPU and Memory Utilization. We are able to see the network interface and Rx traffic but not much else. I have the MIBs for Firebox. I am using the OpManager web interface. I am new to this. How do I get OpManager to display the rest of the firewall info? I have enclosed a screen shot of the Firewall fro OpManager.

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