Emby and Pushover with firefox addon

[ng4ever 40]

Trying to get Pushover to work with this Firefox addon called Push Client. It works when I test it but when I play something in Emby refuses to give me a notification

 

https://addons.mozilla.org/en-US/firefox/addon/push-client/

 

I doubt anyone can help but wanted to try.

[Luke 42080]

Hi there, let's look at an example:

Thanks.