how to export a PDF document in other version word or powerpoint

Hi Fabriziop,

As per your account information it seems that you are a subscriber of Adobe PDF Pack.

Adobe PDF Pack is an online service that you can use online via  https://cloud.acrobat.com/convertpdf or

You can also use the services through free desktop version of Adobe Acrobat  Reader DC- Adobe Acrobat Reader DC Install for all versions

You just need to “Sign In” using the email under which you have subscription registered

How you can access the Export PDF service, for that you may refer to the help article here- Using Adobe Export PDF 

For any troubleshooting, refer to- https://forums.adobe.com/docs/DOC-8841

Let us know if you need any further assistance on this.

Regards,

Akanchha