For me it’s getting stuck in the browser on the 2nd page (2/2) of the instructions. Once I press NEXT it just seems to freeze and hovering over the button doesn’t animate it any more.
I just downloaded it too and it’s also getting stuck on the “Welcome to the playtest” screen. On closing the window it does come up with the “Thank you for playing” / Quit screen though. Also the animated text is still waving. This is on Linux.
Hope you can track it down, or is it just me?