Are you playing the mobile version?
Anyway.. This is some kind of bug in the "tutorial" scene.. I'm sorry. In this "tutorial" scene after the slap you should continue until the message ""Congrats you unlocked this scene" appears. Then after completing this tutorial scene the same scene should open in the game but "not tutorial" in which you can then find all the rest of the game features. So if the game gets stuck in the slap try to replay it until you get past that bug.. (because sometimes you get past it and you can advance)
I also encountered this bug and I managed to complete the tutorial scene only by clicking the slaps in a different order and at different times (if I remember correctly). I think you have to wait and click when it's the right time to not get it stuck. Sorry guys..
I hope the new dev can fix these bugs asap. Follow me on discord for updates.