Ads on the site.

We have been trialling ads on the site to see what works best without ruining experience for you all. we have one stuck to the bottom which doesn't get in anyone's way. No we have a second ad that sits behind a piece of contect. still wont overlap your data on your screen. We did have a small video ad on trial which boosted earnings but it has seemed to have vanished. Can any of you help me and confirm if you can see the little video on that can be closed. and if so what device you're on and what site page. It would be a huge help.

Thanks
Doom