Why are my ads not changing?

Heey guys,

I just bought a new site, and changed the adsense from Google. in the edit there stays that it are mine adsense and on my pc also. But when i look on a friends pc or on mine ipad there are ads of the privious owner. How? I deleted the cookies on the pc and also on the iPad (never visited the site with the ipad) And im pretty sure i changed all!

What is the reason of this?

C@MEL

Are you using any cache plugin? wp total cache? super cache? Disable that and see.

It is using super cache, i deleted it, but no diffrence for so far.

I deleted through the FTP, maybe do i have to delete some more stuff?

C@MEL