To connect your Clash of Clans game account, you must input your player tag. To find your player tag, open Clash of Clans and click on your username in the top left corner Your player tag should be visible in your Player Profile (scroll up to the top of “Home Village” within “My Profile”).
Make sure to complete the tutorial before connecting!
If you are having trouble connecting your player tag, please ensure that your player tag is accurate (some users accidentally mix up “O” and “0”).