Hey Wolf, I need you to do two things.
First, click "About Me" on your profile (directly above, then click the yellow pencil next to "XG Rank", update it to "Captain", then "Save".
Next, click "Community" on the top of the page, then click "Join A Clan" in the drop down menu, click the bubble next to "Captains - KoG", scroll down to the bottom, click "Join Group". In the text box where it says "Person Who Recruited You", you need to state your Clan and your Rank.
Thanks!