To start, I am a cross player but in Bungie's tweet it said "all players" so it shouldn't matter. As the title implies I cannot change my name. I have tried logging out and signing in to luck.
"You do not have any name changes available. Your Bungie Name is legocoon#4423. For any questions regarding the name assigned to you, please visit bungie.net/crossplayguide."
I don't want the name you assigned to me I want the name you said I could change!