Broke for me on question #2 on Android. [Edit: tried both Firefox and Chrome.]
The the bar to select number of hours, or rather the numbers in that bar, extended off the side of the screen, no visible button to continue (presumably off the edge of the screen with the rest of the bar). Unlike the numbers, the actual selection bar thingy seemed to (in?)correctly scale with the window, resizing when I turned my phone sideways, but it was pretty short - only went from 1 to 6 on the 1-24 scale - so there may be a problem there too.
It's a shame, seems like a really cool concept.