Ipad doesn’t drop the submenu items down. May need to change from Twenty Fourteen theme to something else?
This seems to be a common problem with 2014 theme. I googled “wordpress twenty fourteen ipad menu dropdown” and found quite a few references.
See https://wordpress.org/support/topic/menus-on-ipad – use UberMenu plugin or similar?
*** SOLVED THIS *** – see post “Lots of changes” 31/10/2014.
As another issue, investigate Media Library Categories plugin?