I think we spoke via email earlier today. If not can you provide further information on any errors you are receiving.
It's usually just a case of trying to preview your app from Construct 2 preview. If that is the case, it will not work. It pulls a Phonegap specific library down from NPM or Github that is not pulled during html/Construct 2 preview. To fix this I would recommend building and testing from the build.phonegap.com platform.