Don’t know if this will help anyone in the future but the solution I used was to use hotkeys to open the windows print dialog (Ctrl + Shift + P) and then saved the page as a pdf. I then used “convert page to image” activity to create a series of images by looping through the document.
Another solution I used on a different page was to target a UI element that only existed at the top of the page, then start the screenshots from the bottom of the page, scrolling until the target UI element became visible.