My team is trying to remediate a lengthy PDF (200+ pages). In attempting to use the standard accessibility tools in PDF, we've been unable to add certain headers and all jump-to links to the reading order. For the jump-to links (appear as navigation buttons on every page to the user), they register in the correct tab order, but not reading order. We're unable to gain 508 compliance status without these items fixed. When we try to add the reading order number doesn't stay or, more often, Adobe Acrobat completely shuts down. We've tried working on it in InDesign, but nothing has helped with the remediation of the exported PDF. Any workaround or guidance would be greatly appreciated!