Hi Gr8WhiteClark, Looking at your profile, I see that you do not have your gamertag linked to your bungie.net profile. In order to be able to join a clan, you must have a gamertag or PSN ID linked to your bungie.net profile that has played Destiny. You can link your gamertag to your bungie.net profile by going to your profile page > Settings > Linked Accounts. Once you've linked your gamertag, you'll have no trouble requesting to join your group's clan (assuming it is open to new members). Once you've been accepted into the clan, your clan name and ID will show up in-game. I hope this helps!