These clickable "icons" within buttons are extremely confusing.
I remember that i couldn't get past them in E3 alpha as well. I just couldn't figure out what to do, so i never actually played before.
I kept randomly clicking everywhere, but still couldn't get "Play" button to activate.
This time, half-consciously, i still have managed to kinda-sorta understand how it is working after all but anyway this is a very bad UI right there.