@lia i'll pass it on to the person. thanks!
[EDIT]: update -- they said:
"Thank you for that advice! So I got home and I opened it all up and everything looked great, unfortunately lol. I was hoping I would see something that was obvious but it looked pristine once I got the cover off. The good news is I got it to work… The bad news is… I don't know how. I started pushing down on things just to see if anything was loose and then all of a sudden the light comes on. A couple minutes later I was doing something and the light went off and then I pushed down again and the light came back on. so I went ahead and connected everything back together and the light stayed on and I was able to ride it but now I'm worried it's going to shut off. 😬😬😬 I can't trust it to ride it rn because I can only assume I would nosedive."