Allow for attaching pages numbers and Keynote documents. Document picker does not allow this.
Selecting attachments does not allow attaching anything except textedit docs. Not sure why
David Everett commented
I can attach Pages, Numbers, and Keynote files from iCloud Drive using iOS 8.3 and Boxer 5.2.2.
Same here. Any update on this? I can only select files from Goodreader and TextEdit but not other apps.