In Chrome toggle to view the Developer Console (On a Mac, press alt+cmd+i) and then navigate to the site you wish to check. When the site has loaded the "Network"-tab in the Console will show you all the requests that are made on page load. Use the "Filter" function to find our scripts, filter out on "de17a.com".


Chrome Developer Console to check tracking scripts


What you are searching for is the "pageView"-request. Select this request and under "Headers" you will see that it is triggering correctly with the "Status Code": 200 OK". Then under "Query String Parameters" you will see if any pageID-parameters are sent in and all other parameters as well. And to which tracking account ID it is gathering data.