Greetings! Unfortunately, there is no way to remove accounts from your Cross Save setup if you cannot authenticate them when doing the deactivating process. You will have to work with your email's support or platform supports to get this handled. [quote]Destiny Player Support and Bungie cannot modify or remove accounts linked to Bungie.net profiles. To protect player privacy and data, you must be able to log in to any linked accounts to prove ownership prior to modifying your linked account. If you no longer have access to a linked account, you will need to reach out to the specific platform’s support for assistance with account recovery options.[/quote] via the [url=https://help.bungie.net/hc/en-us/articles/360049498031-Destiny-2-Cross-Save-Guide#authentication-issues-0-5]Destiny 2: Cross Save Guide[/url].