I know this reply is probably not useful to the author since the post is two years old, but it might be useful for future students:
To me (I've tried with Edge and Chrome browsers) the links in the grading instructions are not clickable, but the URL:s for the grading instructions can be entered manually into a browser. Then I can access the grading instructions.
The links are available when clicking the "i" symbol next to the grading form. (This is also true for all HTLM-files and .py-files).
BR,
Cecilia