Phone: Samsung Galaxy Note 8, but I had this same problem with my Note 5.
Version: Adobe Acrobat Reader 188.8.131.52869
Problem: I have been having issues for a while with opening my insurance cards from my bank (USAA). It always opens as a blank file regardless of how I have the file delivered... download or email. When emailed (Gmail) I can see the preview of the file at the bottom of the email, but when I open it, it appears blank on my screen. Any known fixes?