Membership Types Randomly Stopped Working
I was able to figure it out. In the back-end, I "un-abled" the Membership Section of the Contribution Page (ultimately, shutting down our form for a second), quickly saved, and then quickly Enabled the membership section again and selected the membership levels. Basically, "resetting" the membership section. Some of our donation pages (no membership section enabled) were also messed up -- if we had 4 selections originally, a bunch more were added to the list. Manually deleting/reordering those solved that issue. I'm still not sure why this happened, but this worked for us.