Deploy WordPress button is disabled in Google Cloud Launcher

Google Cloud WordPress Launcher Screen

In order to use Click to Deploy with Google Compute Engine you need to make sure “Google Cloud Deployment Manager API” is enabled on your project. You can enable this API from Developer console->APIs page.

Google Cloud API Manager Screen

Moreover, if you have multiple accounts added in your browser try using Chrome Incognito tab to login in order to make sure your email has the right permissions.