The game is loading as expected. Seems that the controls are not sent for some reason to the application (asuming you are pressing the ones presented in the Keymap pictures).
I have just tested it on my Microsoft Edge, and it seems to work on my end.
I am not sure what happens, but please feel free to get the Executable version, since that seems to be the fastest way to either discard some issue with the input/browser or to find a solution for your problem.
Regards.