Somehow my strokes got destroyed.

Here are images of my files. The first two are how it should look. I honestly think my kid hit a bunch of keys and then closed the illustrator file and he changed something in the process. I just can't figure out how to get it back to how it was.

The strokes were originally set to scale with the logo. Now they look way too thick in places and too thin in others. And when I click on the logo there are question marks for stroke and it shows there is no stroke when I open the appearances panel. Any one that can help, I would be extremely appreciative!