If you signed up for CircleCI prior to September 2023 or are using an OAuth integration that has not been linked to your standalone email + password, you will need to authenticate your account/sign in via your VCS (GitHub or BitBucket)

In order to sign into CircleCI using your VCS you can navigate to the following URL and click log in : https://circleci.com/vcs-authorize/ and click on either "Log in with GitHub" or "Log in with Bitbucket Cloud" :
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