I want to enable cross-save, but for this I need to confirm the PSN and Epic Games accounts, I have no problems with the second one, but the fact is that my PSN account has not existed for a long time, it was deleted because I did not use it, and in order to untie it from the Bungie account, I have to go to in his personal account somehow, please developers notice this and untie my playstation account from the bungie account
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To add what the rest has said. Bungie doesn't store our login information so they have no way to remove an account from cross save.