Hi Rhodaw,
We have checked your account, and found an active subscription of Adobe Export PDF. You should be able to access the service as subscription is up and running fine in your account.
Adobe Export PDF Using Adobe Export PDF is an online service that you can access online via- https://cloud.acrobat.com/exportpdf
You can also use the services through free desktop version of Adobe Reader- Adobe Acrobat Reader DC Install for all versions
You just need to “Sign In” using the email (Adobe ID) under which you have subscription registered.
I assume that you have been trying to access your PDF Pack subscription through wrong application Adobe Acrobat DC not Reader DC?
Please ensure that you are working with Adobe Reader DC not Acrobat DC to access PDF Pack and "Signed In" using correct email.
For any troubleshooting, refer to- https://forums.adobe.com/docs/DOC-8841
Let us know if it still doesn't work.
Regards,
Akanchha