Hi Marcel,
Thank you for reaching out to us.
I'm afraid that the AdMob SDK is only officially supported on the Android, iOS, and Unity platforms. Thus, we cannot promise its full functionality (nor can we provide technical support) when it is used alongside other third-party platforms or frameworks (such as Cordova). You may follow our blog or release notes (Android / iOS / Unity) for any possible updates on this matter in the future.
Regards,
Ziv Yves Sanchez
Mobile Ads SDK Team