I linked a wrong battlenet account to my bungie account for cross save. The reason i did it was because when you need to log in on your battlenet to link your account it gave me a random battlenet account but i coulnd't change it to my account for some reason. Does anyone know how i can change my linked battlenet account?
Please go to your Bungie.net Settings, then Accounts & Linking. There, you can unlink the Battle.net account that you don't want to use and then link the one you do want to use.