Started a new player, set up my bars, logged out for a bit and when I logged back in all the bars were empty like I never set them up. Any thoughts? Thank you!
Make sure to log out doing /quit and clicking the 'exit' button afterwards. This saves your bars.
That said, there is a bug about quickbars resetting at early levels for certain classes (I believe??). Something to do with unlocking all of your available buffs. If this is what's causing it, it's being tracked + a fix is hopefully coming soon.