I've redeemed several emblems over the last week, and none of them have appeared in collections. I've waiting several days. and even tried looking at collections on different characters to see if that might help. I've also tried re-redeeming them just to confirm I used a legit code to no avail...
-
Which emblems? Did you go to the emblems redemption history page (not the same one where you entered the codes) to make sure none had to be applied to your account?