Question
Good PDF files rejected by Acrobat on Android as incorrect format. Why?
Transferring a PDF file on a Windows 10 PC using Dropbox to another user with Acrobat on a Nexus5X results in the file being downloaded but then rejected as being incorrect format. The same PDF file can be read on another PC (Windows and Linux). The Nexus 5X reads other PDF files correctly.
Where is the problem and how to sort it out?
