Hi Winter,
We see that you have subscribed for "Adobe PDF Pack". As asked above how exactly you are accessing your service, please share the link for the help video?
Here is how you can start with your Adobe PDF Pack subscription-
Adobe PDF Pack is a bundle of Adobe Document Cloud services. With it, you can easily create, combine, organize, sign, and send PDF files online. You can also convert PDF files into editable Word or Excel files.
1-As its an online service, so you can access it via- Adobe Document Cloud using any web browser.
2-Refer to the detailed steps here: Using Document Cloud Web apps and services | Adobe PDF Pack
3- You can also download Adobe Reader DC desktop application to access your service- Adobe Acrobat Reader DC Install for all versions Sign In with you Adobe Id and password for the activation.
Note: Reader DC supports many feature, excluding Organize Pages. To use Organize Pages, it will redirect to the web interface.
Hope this helps proceeding further.
Regards,
Akanchha