Captain

I just realized that the site has me listed as FL in assault. I am Captain perhaps its because of how the game differentiates the key item. But maybe FFXIah can try and incorporate this rank into the profiles?

This looks like it's SEs error, and not FFXIAHs. If you go to your character screen and click on your profile link, you'll notice that the Linkshell Community lists you as a First Lieutenant and not a Captain. As no other information on your LS Community profile can show you definitive proof that you are a Captain, it is impossible to do this. Sure, you can see that you're on the last ToAU mission (Eternal Mercenary) and you're the final rank in Assault, but you can do that easily without completing every unique Assault mission. This is the only 100% reliable source of information out there that this site can get its data from, so they're limited by what it displays.

Ah I see