I currently use crosswalk, had a lot of other issues with phonegap builds.
Now just to use IAP, we'll have to again change to phonegap and see if everything works.
I couldn't stress more on the fact that C2 needs a proper official IAP and ads plugin that work on major platforms atleast.
If Ashley and team can get this done then it becomes a complete end to end game engine which can be used to make money from games.