Hello there[url=https://tuxydoh.com/images/hi.gif],[/url] A name reset to default like that means it was detected or reported, reviewed by Bungie and reset to"Guardian####", that indicates that some part of the name broke the [url=https://www.bungie.net/7/en/Legal/CodeOfConduct]Code of Conduct[/url] or the [url=https://help.bungie.net/hc/en-us/articles/7648312251284-Bungie-Name-Guide]Bungie Name Policy[/url], was filtered, and [b]can no longer be used.[/b] When that happens, you get the new name cross play message in-game as notice of the name change. You can try a different name if you have not previously changed it. If the system is not allowing more changes, there is no way to override it. Additionally, I am not privy to what portion of the name policy or code of conduct your name was running afoul of. All I can advise is that once the name has been moderated by Bungie, it is no longer available for use. If you have a name change available still, you can change it to a different name.