Hi there friend - right now the max level for testing is 15. While players may not achieve this on their own during our shorter spot test windows, it may be more feasible to reach level 15 when servers are open for longer periods for our upcoming Alpha One testing! If our team needs you to be a certain level to participate in something (such as siege testing), we can level you up accordingly in-game.
In general, expect many many MANY wipes of your characters and progress during upcoming testing - this will help ensure that we're getting the latest fixes and changes out to you in a timely manner!
I'm going to go ahead and close this thread out now, but please don't hesitate to reach back out if there's anything else we can assist you with in the meantime!