I can't open any PDF files
For opening PDF files using Acrobat Reader on any mobile devices, please follow the links below for different platforms.
How to open PDF documents in Adobe Acrobat DC for iOS (iPhone version)
How to open PDF documents in Adobe Acrobat DC for iOS (iPad version)
How to open PDFs on Adobe Acrobat DC on Android
If none of these works for you, please explain on which platform you are trying to open PDF files and the workflow of it.
Retrieving data ...