Chess.com lets you sign in using your Google, Facebook, or Apple account, and connect your Discord and Twitch accounts. If you’re using a new account or want to disable this feature, follow the steps below to connect or disconnect accounts.
How to connect or disconnect an external account
Click on 'Settings' from the menu at the bottom left corner of any page on Chess.com.
Choose 'Connected Accounts' from the list of options on the left.
Here you'll find your connections for Facebook, Google, Apple, Twitch, and Discord. To link any of these, click 'Connect.'
To change an existing connection, click 'Disconnect' to remove it, then 'Connect' again to add a new connection.
You are now able to log in with your new connection!