advertise is just yellowish

In the first days I tried the advertise it was showing contents, from yesterday it is only yellow. I tried from different computers from different connections but it's just yellow. I'm still building the contents of the pages, still, the site for reference is:
www.goodgamegarrison.alterivsta.org
the ads is a skyscraper put on the right of every page. Do you see the ads? If not, what should I change?

[saitfainder]

There is a problem with some adv campains. We are working on it to fix it as soon as possible.