1. First you will need to connect A2V with your Google account. Log in to your A2V, access "My profile" -> Choose "My account":
2. Scroll down -> Turn on "Google":
3. Click "Continue":
4. Choose the Google account that have the same email with your A2V account and the activation is done.
5. You can then log in with Google account by click the G icon on the log in screen