If it helps, here is the Crash Report from Google, When the game crashed I did a Report:
"ava.lang.IllegalStateException: IAB helper is not set up. Can't perform operation: launchPurchaseFlow
at com.smartmobilesoftware.util.IabHelper.checkSetupDone(IabHelper.java:784)
at com.smartmobilesoftware.util.IabHelper.launchPurchaseFlow(IabHelper.java:374)
at com.smartmobilesoftware.util.IabHelper.launchPurchaseFlow(IabHelper.java:340)
at jp.wizcorp.phonegap.plugin.wizPurchase.IAP.buy(IAP.java:348)
at jp.wizcorp.phonegap.plugin.wizPurchase.IAP.access$200(IAP.java:43)
at jp.wizcorp.phonegap.plugin.wizPurchase.IAP$2.onIabSetupFinished(IAP.java:278)
at com.smartmobilesoftware.util.IabHelper$1.onServiceConnected(IabHelper.java:260)
at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1223)
at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1240)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5491)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)"