Hi there,
If you go to the page itself and download the HTML, you will see that it also downloads a folder full of relevant files, like these:

This is what is rendering all of your missing stuff. It is the "Webpage, Complete" option. OneDrive is only grabbing the HTML.

I think the easiest ways to deal with this would both involve Power Automate Desktop, in one of the following ways:
1) Screenshot once an hour.
OR
2) Tell the bot to just open the page once an hour and download the HTML as if it were a person. The folder would come with it.
Cheers,
Rhia