@Giga
On which page, please?
@Gazza099
I’m afraid you’re using a cable with 2 3-pin connectors.
Your source (iPad) delivers unbalanced stereo – your mixer’s input is balanced mono.
This means that you only hear the difference between left and right.
This is why you don’t hear any vocals if they are evenly distributed between left and right.
So use a cable from the 3-pin iPad to 2 channels of the mixer.
Or a cable with 2 identical 3-pin plugs that fits into the unbalanced stereo input “ST3 In” on the top of the mixer.