Why does application keeps stopping on my iMac?

Hi Judithk,

Sorry for the delayed response.

As per the issue description mentioned above you are facing issue when trying to export pdf, is that correct?

As we have checked the account details using the email address you are logged into the forums, you have subscription for Export PDF.

Try exporting the PDF file through the URL: https://cloud.acrobat.com/exportpdf with your Adobe ID and password on a browser like Chrome, or Firefox, or Safari and check if that works.

If you are using the freeware Adobe Reader and getting the error message, please sign out and sign back in Adobe Reader DC using your current Adobe ID and password, and check for any pending updates from help>check for updates. Reboot the machine after installing updates and try exporting the PDF file. 

You can also refer and try the suggestions from the following KB article: Resolve connection errors with Adobe Creative Cloud and Creative Suite applications

You may also refer to Troubleshooting Create PDF, Export PDF, Adobe Send, Fill & Sign … services(PDFPack or Document Cloud Services).

Let us know if you need any help.

Shivam