Thank you! After assigning a class to each of the MC's time block, can you not start the week? (The start button should be on the bottom right.) Otherwise, could you let us know where exactly the game gets stuck?
Thank you for the report! Tapping the screen a few times probably doesn't let you continue?
This bug should definitely be through the joiplay app, because it works fine on desktop devices. So sadly, we don't have a solution for this.
However, we have plans to release the demo on Android in the near future. So if this doesn't get fixed on Joiplay's side, you will still be able to play the game then!