Hello,
This is the test I did based on your link with Postman :
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I'v got a bad request return, I am not sure what was wrong.
In the same time I attached a picture of the RF relay connected to the Internet , you will notice that the Server status is not blue :
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When I did a Wireshark capture on my network , filtering IP management and the server IP I have stricly nothing as activity network :
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This the result on a telnet connection on the management IP box , ping is successfull , and status seems to be OK :
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EDIT : I just found the bin to make an upgrade of the IP observer module, I will let you know.