Tried for 10 minutes to get your game to work; P does nothing. Spam-pressed every key on my keyboard, clicked around the entire workshop, including pressing P while looking at everything, clicked on the cash register (crashes you), and tried making potions without an order. I couldn't get an order to show up at all. While the art is nice and the music is music-y, I am afraid to say that I cannot progress.
In the tutorial text wall when you click begin, the text also flows off the screen and the button is nearly entirely pushed out of the window bounds, and full-screening didn't help that. This is definitely one of those cases of needing more time and polish. The atmosphere is nice, though! Hopefully your next game comes out clean! Good luck.