I'm having the same issue. It just goes black after loading the level. There is also missing data it looks like, with things like TIP: #NAN null on the loading screen.
Thanks for the additional info! Turns out a service for the game has been retired. Retooling some backend stuff and should be deploying an update shortly.
Glad to hear that it seems fixed. Fully acknowledge that the onboarding/tutorial could been a bit clearer. (And the screen size and text isn't the most approachable/accessible)