To setup BitBucket login go to https://bitbucket.org/account/signin/

• From your profile avatar in the bottom left, create a new workspace

• Click Settings on the left sidebar to open the Workspace settings.

• Click OAuth consumers under APPS AND FEATURES on the left navigation

• Click Add consumer, and fill out any required fields such as the application name.
• Provide this URL as Callback URL: https://yourwebsitedomain.com/wp-login.php/?action=social_login_authenticated&provider=BitBucket

• Check Email and Read checkbox under Permissions.
• Save settings. You will find your Client ID and Client secret keys on the next page.