Clara
Yes i know this, i definitely cant do it
but for someone who is familiar with javascript it should be no problem at all to build that bridge for construct2. Maybe let your devs take a look at the cranberry admob plugin (its the one thats shipped with construct), its also an Cordova plugin but you set your ad id and the calls in the construct editor.
the downside is, Cordova means "only" Android, iOS and Windows Phone but i think what many people need is a monetization option for games that are hosted on a website, for webapps (such as Firefox OS) and Nodewebkit.