You can only equip the emblem on platforms that you preordered Beyond Light on, all other platforms will display the error. It's intentional. If you are on the platform you preordered BL on, you will need to contact your platforms support team to find out why your preorder addon license isn't being recognised. [quote]EMBLEM OWNERSHIP UPDATE Starting with the launch of Season of the Deep, emblem ownership values were updated. For security purposes, players who have emblems on their account that do not appear in their Collections (Collections-Flair-Emblems-General) will no longer be able to equip these emblems, and players will no longer be able to see these emblems if they are still equipped. Those who are affected by this change will need to reacquire these emblems through proper means by unlocking them in their Bungie.net profiles or on their platform if they wish to continue using them. Players who have emblems unlocked on their Bungie.net accounts and platforms are unaffected by this change.[/quote] https://www.bungie.net/7/en/News/article/twab-may-25-2023