Have the same issue with some clan members. I posted my question separately. If you get an answer let me know. I've got 2 members whose clan tags won't work in game. Yes we have more than 3 members, yes they are linked through bungie.net, and yes they have left and rejoined multiple times each. They show up on my clan roster, but when we play with them in game they aren't registered as clan members. Anyone else have this issue or know how to solve it?