Hello, I have reached out to the Central team and learned they have been migrating user accounts to our new account management platform, and you should have received an email regarding this change. If you are receiving the 401 response or are unable to log in, please refer to the last two sections of Notice of Migration of Accounts to the New Account Management Platform - Documentation and/or reach out to the Central support team, if necessary (central-support@sonatype.com) for the work required to manually associate your new account with the correct permissions from your old account.
cc: @ph1