leadeleon, volkanabur, rumeysaatas and ismailterzi – thanks for reporting the error code. One of our partners in a couple of countries had a campaign that expired. We will make sure that doesn’t happen again.
MojaTv – I always see ads on your site from the US. It really depends on which country you are viewing your site from. Do you want to email me a screen grab to email@example.com? You should see About These Ads with a link to WordPress.com above the ads.