In-game I achieved the red box in Conquest (and I'm positive about that because I re-confirmed it every day while farming datacrons after having accidentally missed it in a previous Conquest), but I only received 65 shards for SM-33 which is the gold box.
I can even tell you the last feat I completed to get the red box: Call allies to assist with Booming Voice 60 times. I did it on one of the treasures nodes using SEE/Bane which gets it done crazy fast. After a few auto-battles, I got the pop-up for the 15 keycards for completing that feat and the graphic in Conquest changed to "red crate achieved" (which I obsessively re-confirmed). I have no idea how I could get the wrong rewards from that.
