Hello Rebeccas,
We're sorry for the delayed response and inconvenience caused. Try exporting the PDF file using the URL https://cloud.acrobat.com/exportpdf with your Adobe ID and password on a browser like Chrome, or Firefox, or Safari and see if this brings any difference.
Does the PDF file contains only images? Is it a scanned PDF?
The record shows that the Adobe ExportPDF service is canceled and inactive. To check the current plan details, log in to Adobe.com>Manage Account>Plans and Products or refer to Account and membership help
For more details about Adobe ExportPDF, you can refer to FAQ | Adobe Export PDF, Document Cloud
For troubleshooting, refer to Troubleshooting Create PDF, Export PDF, Adobe Send, Fill & Sign … services(PDFPack or Document Cloud Services).
Feel free to update this discussion for any further assistance.
Thanks,
Anand Sri.