Good to see you again. It’s a bit hard to fully troubleshoot the program without the link to the shared project. Your link unfortunately just takes me to my own program on that level. You could have the student remix and then share the project to get the link, however, I just helped another teacher with almost the exact same issue on almost the same level, so my answer from earlier today may help.
Here’s a link to that answer. Let us know if that helps!