Hi,
I'm having the same issue - everything appears to be working however iOS devices are never listed in the Mobile devices collection. I did set SCCM up using a .local domain however have used a valid UPN for intune users. As mentioned users can validate and access apps but devices aren't enrolled.
Can you recall what the issue was in Malik4U's case? Or advise of any log files I can check to get this running. I really don't want to rebuild everything but its starting to look like that's the only option left ....
Oh and thanks for all the effort in developing these guides - I would have given up on several occasions if not for the detailed information available here.
Cheers