Hello kail46044859
We apologize for the inconvenience caused, as per the description above, you are not getting the option of converting a PDF file into JPEG while using the services of Adobe PDFPack services, Is that correct?
You will get an option to convert a PDF file into JPEG format with the Adobe PDFpack services, please try to use a different browser like Chrome, or Firefox, or Safari to convert the PDF file into JPEG through the URL https://cloud.acrobat.com/exportpdf with your current Adobe ID and password and see if this brings any changes.
If you are using the free desktop version of Adobe Reader, then sign out and sign back in with your current Adobe ID and password in Adobe Reader.
If the issue persists in Adobe Reader, then check for any pending updates of Adobe Reader from Help menu>Check for updates.
You may also refer to Troubleshooting Create PDF, Export PDF, Adobe Send, Fill & Sign … services(PDFPack or Document Cloud Services). and FAQ | Adobe PDF Pack
Let us know how it goes.
Regards,
Anand Sri.