I personally also had problems adding additional characters for an approved fandom, and it took me several tries before it went through. If you click on the button "Your Nominations" at the top of our tag set, it will show whether or not your character nominations were inputted into the tag set. If you don't see them there, please PM us at dark_administrator or email us at darkadmn at gmail, and we'll manually add the missing characters to the fandom.