Probably easiest way would be to leave it at the default path ie C:\Users\<USERNAME>\Documents\Xibo Library
I had a quick look at your CMS Instance, everything is in order, I could add my device without problems.
Please make sure that nothing is blocking the connection and I’ll also pm you the url/key just in case.
That is what I have entered. I have also had our broadband support team check and the packet is sent down the line, so the error must be xibo end or on the management console? It’s bypasses our proxy server anyway on the client I’ve setup.