Thank you for playing and for the feedback! I'm not sure about the UI element under the score that you mentioned, is it something that you can see in the screenshots in the game page? If not, do you mind sharing what system you're playing on so that I can try and reproduce the problem?
About the play button not working, that's because the game is downloading the assets needed for the level but I didn't put any loading indicator so it looks "stuck", will try to have a more robust system in place for next time!