No need to apologize. Everyone has been a noob at one time. Moodle will 'grow' on ya! [like it not! ;)]
The things I suggested would probably help only in verifying an iPad user was getting there and info about the version of iOS the iPad was running as the Apacheserver sees the device. Could make a difference. But, for now, just stick with Moodle UI.
Will share one more thing ... in a Moodle 2.8.10 (Build: 20160111) thought I remember having to turn on web services for mobile apps. After doing so and checking log in Moodle UI noticed references for the 'source' to be 'cli' ... which is "command line". Would make sense to me IF the iOS Moodle App was using webservices calls for some things. Have any references in your logs in the course column where 'cli' shows as opposed to 'web' other?
'spirit of sharing', Ken