SamRock I haven't done any updates to this plugin since the official plugin was released.
After a quick look at the mediation option it seems that you only need to add another Cordova plugin to activate the function. There has not been any change to the JS-api so the C2 plugin should probably work.
The 2% share is something that is built in to the Cordova plugin itself, I have no control over that part. That is the reason cranberrygame did another Cordova plugin for the official C2-plugin without any share.
You need to check the fine print for the Cordova plugin to see what the current share is.