For scene control try doing the following;
1. Use the Cue List Editor to setup the specific scenes for your show/event in the proper order.
2. As @nick-home suggested use the “Next Screen” / “Go” combination on a pair of soft keys to control the scenes. You can view what’s next at the bottom of the screen, to be sure that the next scene is ready to go.
I’m not sure why you aren’t able to control all of the faders. Have you tried with the mixpad app?