You have bonus xp. 
I hope you haven't skipped level 2 by any means (not sure if that's possible though xD). If that's the only character on that account and you haven't received anything on it as you said, you should copy and paste all this and write a ticket and most likely they will send you a box.
Posts by Glacial`
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Yes, your character slots will be unlocked up to 8. Additional character slot when new a new class arrives will unlock the 9th slot. Also, you need to buy that "Additional character slot 9-16" from now on, which also unlocks only 1.
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