The thumbnail/icon for these documents is a document.The remaining 50 Pages documents will not open and nor can they be Moved, Shared, Duplica.
I have about 150 Pages documents on my (wife's) 3rd Generation iPad Air v11.0.1About 100 of these documents can be opened and manipulated normally.Fix 1: Check your Windows HOSTS file-Make sure there’s no entry in the hosts file that maps the website’s address to localhost or an incorrect IP address like 127.0.0.1 - it is a possibility if you have imported some third-party hosts file.