Sallymelek I'm not entirely sure that this extension is even working, There's nothing in the console, and no matter what settings I apply, the JS doesn't fire :(
I also noticed that @Justoverclock has also opened a GitHub issue - https://github.com/andre-pullinen/ads/issues - no response though. This seems to be just a fork of the original
flagrow extension, but it seems a dead cert that this does not work on Beta 15. We might be able to do this another way by inserting arbitrary JS into a DIV that we can then position on the site (in the header as a target) to at least get this working in simplistic view to start with - at least then you'll get to realise some form of revenue which you aren't getting now.