I have been using the Dell Document Hub for about a year without any issues. I use it mostly for scanning. I was able to scan from the app using my iPhone 6. I needed to reset my iPhone and re-install my apps. Now, when I try to scan, I get an error: "Error - Failed to Scan". I've reinstalled the app a few times. Same issue. I can see my Dell 1765 printer and can even print a test page. I've tried everything and nothing seems to work. I can scan from the app using an iPad with an older iOS. I wonder if it has anything to do with my iPhone's iOS (10.3.1).