Same here with problems, which I have noticed over the last 2 weeks or so.
Parts lists and manuals come on screen as ‘loading’ then show the page 1 illustration but scrolling down to page 2 just shows a blank page and then cannot scroll further down or backwards and so have to exit to get off the page.
Manuals / Parts lists do not open on my laptop (Chromebook) where previously I have never had a problem.
Have tried on phone but same as on laptop, nothing opens.