Hello Rodrigom,
Sorry for the delayed response and inconvenience caused. As per the description above, you are not able to convert a PDF file to Excel as getting a conversion error, Is that correct?
There is no page limit to export the PDF file. Adobe Export PDF supports conversion of PDF files up to 100 MB. The record shows that you are subscribed to the Adobe ExportPDF service.
Try exporting the PDF file using a different browser through the URL https://cloud.acrobat.com/exportpdf with your Adobe ID and password and see if this brings any difference.
You may also refer to the following Adobe article related to the issue File conversion error | Adobe Export PDF
Is it possible to share the file with us so that we can test it at our end? To share the file, please use Adobe Send feature, login to https://cloud.acrobat.com/send using your Adobe ID(email) and password, upload the file, share the link to files via private message only, How Do I Send Private Message
let us know how it goes and share your observation.
Thanks,
Anand Sri.