Hi Boatman,
May I suggest using this simple connection...
or, purchase an Apple Airport Express router, and one of these cables even though Apple no longer makes the routers, there are plenty to choose from on eBay.
The Airport Express (not) Airport Extreme allows you to wirelessly send stereo audio from your iPad, iPhone etc.
The router has a stereo 3.5mm output that would physically connect with a cable to two channels on the mixer.
If you did this, you would not use the built-in router on the DL16S.
It is known that the 5.0 manual has many mistakes and it will be corrected.
The information above is just my advise, the nice thing about advise is that you can take it or leave it
LOCKED 3 is the name of my router