Hey there BingBong,
Thank you for visiting the Chromecast Community! Since this thread hasn't had activity in a while, we're going to close it to keep content fresh. We hope you were able to get the help you need, but if you're still having issues, please remove that incorrect Google Account from your mobile device first, then re-setup Google Home after.
If the issue persists, feel free to create a new thread, and provide as many details as possible so that others can lend a hand. Hope this helps!