As per the description above, you want to cancel the current Adobe PDFPack subscription, Is that correct?
I have checked the records with your current Adobe ID which you have used to sign in on Adobe forums, and there is no active subscription of Adobe PDFPack as it is already canceled and inactive.
To check the details, refer to Manage your Creative Cloud membership
For cancellation, you may refer to Cancel your membership or subscription | Adobe Acrobat, Document Cloud PDF services
You may also contact the Adobe support team for more information Contact Customer Care
Feel free to update this discussion for any further assistance.