Hello chrisp32546370
As per the description above, when you are trying to convert a PDF file into Excel, the excel file is missed 16 rows of the number from each page, Is that correct?
Please try to convert any other PDF file into Excel and see if the issue is reproducible. Try converting the PDF file online through https://cloud.acrobat.com/exportpdfhttps://cloud.acrobat.com/exportpdf with your Adobe ID and password on a different browser like Chrome, or Firefox, or Safari and see if this brings any difference.
If the issue is with one specific file, Is it possible to share the file with us so that we can try to reproduce the issue at our end? To share the file refer to How to share a file using Adobe Document Cloud
You may also refer to Text is garbled in converted file | ExportPDF
Let us know how it goes.
Regards,
Anand Sri.