If the plugin offers to enter HTML code a possible workaround should be using the events manager and enter an iframe hidden html with the link to that event to be tracked.
This is similar to the technique used to track documents download directly stored on the server. In the pdf documentation it's explained at the paragraph 'Track direct document download'
If can enter the iframe in the plugin code using the url pointing to a single event the tracking will be recorded, socu as the following:
<iframe src="http://mysite.com/index.php?option=com_jrealtimeanalytics&track=1" style="display:none"></iframe>
Of course if you enter simply an iframe to the site the home page should be tracked with no events manager involved:
<iframe src="http://mysite.com" style="display:none"></iframe>