"Find entity by IP" when PCNS gives shutdown command.

I recently installed PCNS 3.1 on vMA 5.5. This in an ESXi version 5.5.

I installed vMA and added my ESXi  with 'vifp addserver server.domain.name' .

with 'vifp listserver'I can see that it is succesfully added.

Then, I installed Powerchute and configured it like this:

-IPV4

-Standalone VMware Host

-information to the ESXi server (IP address, username and password)

-Single UPS configuration.

-login information to the ups

the PCNS succesfully regsitered the UPS' management card.

The problem

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I now go to the UPS' web ui and comamnd it to reboot the UPS (to test my PCNS obviously).

So I go to the event log in the PCNS and it show 'shutting down host IP ADDRESS'.

But when I view my ESXi it says 'Find entity by IP' and it doesn't do anything.

Both the PCNS and ESXi view these events every 30 seconds.

What can I do to make it actually work?

Thanks in advance.