I just downloaded Adobe Acrobat Cloud Document to my Android phone and to my iPad and all my files and folders previously stored on my iPad disappeared when I selected one file to the Document Cloud. How do I get back my files?
Have you checked the other locations under My Documents like Recent and Local?
If not, then please check them once and also refer to the help document Acrobat Reader Help for iOS: Help
Let us know if that doesn't help.