Thanks for reaching out. You can enter the code after you choose the option "continue without scanning" in the Google Home app. Also, you have an option to scan the QR code instead of manually entering it. You only need to give the Google Home app permission to use your phone's camera to scan the QR code on the TV screen. Scan the QR code then, wait for your Chromecast to connect. Check out this support website article to see the steps on how to set up your Chromecast with Google TV and Voice Remote.