While we are at it, I created an app for my 3rd grader. Just her. It has 1 user.
Thank you so much!
Tested on 74.0 (64-bit) on OSX. These might not be "issues" and how you defined the experience for your little one. If so, feel free to ignore.
Will upload new version of the site tomorrow now that I have a full two users for the app :)