Phil Davies

I've got this working again, with the help of Eugene Orman from ZenDesk support.

For 'Basic Authentication' at the bottom of the extension, add /token to the end of your username and then use an API token:

To generate an API token, go to Admin > Channels > API

Under the Setting tab, click to enable Token Access then add a new token. Give it any label you like and then immediately copy the API token as you won't get to see it again.  

NOTE: I do still get the 'HTTP client call failed' error message when testing the extension. But go ahead and save it anyway. The end result worked for me.  

I also updated the trigger to include 'Current User is end user':

Just spotted this. I'm getting the same error as Elizabeth. "Error during transmission: HTTP client call failed" I take it this no longer works?