GTDNext in Outlook

I found an interesting youtube video on embedding a web-page in the Outlook Shorcuts section and tried it with GTDNext but the UI doesn’t correctly display and I am wondering if you have any ideas. To create it you simply have to drag the gtdnext URL onto the ShortCuts tab on the left of the image below however, when I do so, the UI is only partially displayed and what appears to be java script or something (sorry, not a developer!) is displayed. Any ideas?


I tried this as well unsuccessfully and am instead using a quick-action to forward to GTDNext (with custom subject) and archive the email