My shop screen for an app for school has buttons that aren’t working. There should be no reason why they do this. When I exit the screen and reenter, all the button either go blank or say yes

MIT App Inventor Help
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Code Not Working on App Screen, Need Help Fixing, Even my Teacher is Confused at the Bug

Heres the aia file:

boredomCureNEW.aia (1.3 MB)

What is clutter in code, and why is it evil?