TR8520 Scanner Won't Show All Pages Scanned Using Mac, Catalina 10.15.7

[treewatts]

My TR8520 was working just fine until a few days ago. Now, when I scan a 5 page document, the PDF created only shows 3 pages. I have tried over and over, but the PDF will only show 3 pages. I'm not sure what the problem is? I can't seem to get through to the Customer Service number at all because for some reason my telephone number isn't recognized. Any help would be appreciated. Thank you.

[Porcha]

Hi,

To receive live technical support, you'll want to ensure your printer is registered to your My Canon Account before calling in. You can do that here: http://canon.us/account

Your friend, 

Porcha

[treewatts]

Hi Porsche. I've registered, but still can't seem to get any help.

[Porcha]

Please be advised that you can press zero to reach a phone director to direct your call.