Native Google Maps - iOS OK - Android not working

I have cordova-plugin-googlemaps running OK on iOS real devices but on Android a Blank Screen appears like https://github.com/mapsplugin/cordova-plugin-googlemaps/wiki/TroubleShooting:-Blank-Map. (API keys are OK).

Plugins list:
com.googlemaps.ios 1.13.0 "Google Map iOS SDK for Cordova"
cordova-plugin-console 1.0.3 "Console"
cordova-plugin-crosswalk-webview 1.7.2 "Crosswalk WebView Engine"
cordova-plugin-device 1.1.2 "Device"
cordova-plugin-splashscreen 3.2.2 "Splashscreen"
cordova-plugin-statusbar 2.1.3 "StatusBar"
cordova-plugin-whitelist 1.2.2 "Whitelist"
ionic-plugin-keyboard 2.2.0 "Keyboard"
plugin.google.maps 1.3.9 “phonegap-googlemaps-plugin”

System info:
Cordova CLI: 6.2.0
Gulp version: CLI version 3.9.1
Ionic Framework Version: 1.3.1
Ionic CLI Version: 1.7.15
Ionic App Lib Version: 0.7.2
Node Version: v5.8.0

Thanks!

api enabled in google?

Yes! API enabled in google