Hey,
I believe you are experiencing some problem accessing your Export pdf subscription? I assume, there isn't any problem with the website, it just that your subscription has not been activated at your end.
Try the following steps to activate your Export pdf service.
1- Export PDF is an online service that you can use online via: https://cloud.acrobat.com/exportpdf
Sign Out & Sign In once if you have already signed in.
2- You can also use the services through free desktop version of Adobe Acrobat Reader DC: Adobe Acrobat Reader DC Install for all versions
3- “Sign In” using the email (Adobe ID) under which you have subscription registered.
4- For detailed description of how to use the Export PDF service, you may refer to- Using Adobe Export PDF
You may refer to the following link for any troubleshooting: Troubleshooting Create PDF, Export PDF, Adobe Send, Fill & Sign … services(PDFPack or Document Cloud Services).
Let us know if it still doesn't work.
Regards,
Akanchha