If you run some of the reports for a longer time period you will notice that the View icon has been grayed out.
You do have other options and the best one is Print.
This will open the report in a new tab in the browser. You can then view the results and use the browser print function of Ctrl + P to print it to a printer or PDF.
For the large reports we recommend using "Print" or "Excel" to view the results. Selecting "PDF" from the list can take a while to generate the report in PDF format.