Tried to log in to an old gmail account. Remembered my password perfectly. But it asked for a confirmation code from an old phone number I no longer have (something it never did before). No alternative recovery options.

This is why I keep shilling decentralized social recovery.

can totally relate to this. tried to delete an old Snapchat, requires Gmail validation, tried to log in Gmail, requires either old phone or an outlook.com account that has been reclaimed. with both snap/gmail, i had the right password but that's not good enough apparently