XP Bar not increasing

Hello I wonder if anyone can help.

I am a new player to world of warcraft currently using the free trial.

I am at Level 20, but my XP Bar seems to be stuck on 340/16600 (3%). Even when I compllete quests it wont increase. Does anybody have any ideas?

Thanks|||That'll be because you can't go over level 20 on the free trial.|||Why should the xp bar increase ? It will only end up filling the screen sooner or later.

Seriously though : Trial is level cappet at lvl 20. YOu need to buy the full version to continue.|||oh i see!

Thanks for ur help