I checked your profile and you have options set to 'mobile style' skin.
I just tried it and get exactly the same thing. However, when I click on desktop version, it reverts back.
Unfortunately I do not have sufficient permission to change your forum skin back to default - this would be an admin task. In the mean time, can you try it in another browser and see if clicking on desktop version works? If it does, then you can change the skin value back.