How to create Google Mobile Ads for Flutter app

Watch this video to learn how to create a Google AdMob account for your Flutter e-commerce mobile app.

Create an e-commerce mobile app using WooCommerce, WordPress and build app online or using flutter source code and integrate your Google AdMob account into mobile app

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What should i do if I have an error with code 3 (no ad config)? I read that it takes time for google to verify your app. But for me it is a long process