Hey there! You are not currently cross saved at the moment. Please go on the browser and click on your profile and navigate to Settings > Accounts and Linking to unlink your Steam account. You cannot unlink your Steam account while being logged onto it. You need to create a free platform account and have linked to this profile. Once that is done, log onto Bungie.net with those credentials and unlink your Steam account to relink the correct one. After that, you can proceed to cross save.