https://help.bungie.net/hc/en-us/articles/360049498031-Contact-Form-Cross-Save-Issues Use the Submit Request button at the bottom. As a real person has to go through the submissions, it should be noted that Bungie will only be able to work on your request during normal business hours, so it may take some time before you get a response or result if one is necessary. Please keep in mind that disabling Cross-Save for any reason will impose a 90-day Security lockout during which time you'll be unable to re-enable Cross-Save.