It took me ages to figure out what was wrong after installing this plugin.
Eventually I figured out (only thx to an answer on stackoverflow ): the problem was just that the attachments are not displayed where I expected them to be, i.e. wherever a test result is, e.g. in the home page of the test results (i.e. at `/job/JOBNAME/lastBuild/testReport/`).
I think it needs to be clarified in the page of the plugin .
Something like this:
> The attachments are only displayed at the class level
> (e.g. at "/job/JOBNAME/com.example$project-name/BUILDNUMBER/testReport/com.example/ClassName/.