I was gone for a month, and this isn't even the same site
Most Helpful Girl
These changes have been anticipated for a while now. The Admins mentioned multiple times that in 2014 GAG was going to go through something like this.
Granted, I don't think any of expected such vast changes all at once... but, still.
If you're having any troubles or have questions about the new layout, the FAQ is a great place to get started.
You can also message the Admins if you're having issues with anything, or if you have feedback for them: