We can solve anything with Modeler or Monarch - but we don't build models for free. If you'd like the problem solved, please email firstname.lastname@example.org and we'll happily give you a quote for the work. If you're stuck, then you might want to check what active filter is being applied to your export. You might also want to bear in mind that PDFs might start to have problems with more than 65,000 pages - how big is your report?
We can check your files and see how you can export them. You may send an email to email@example.com, a ticket will be opened for you and then we can replicate the issue.