Newbie question on Emby Alexa integration

[kiisukene 0]

Hi

I have recently installed and configured an Emby Server on a Windows PC and it is working flawlessly as a media server to my NVIDA Shield devices, my phone and tablet etc.  I then stumbled across the Emby Alexa skill and decided to install it.  I have set up a proper certificate, enabled SSL etc and when I say "Alexa, Open M B Home", I get the expected response.

However, when I then ask to play an Audiobook, I get the response "Resource not found or unavailable".  Where might I best look in the config and/or logs to see what I have done wrong?

[Luke 38528]

HI there, what is the source of your SSL certificate? Did you ensure that it's something that Alexa accepts?

[kiisuke 0]

It is a zerossl certificate, but until I get some more detailed log info, how can I be sure that this is the issue?