I did not correctly get my rewards for this campaign. I did get the cross legs. But I did not receive the 20 Star Gems despite my Alliance having 4 players before the maintenance of 3/31.

In fact, I had 6 members at the time, and right now we have 4 still. We have had at least 4 since the Open Beta started.

Anyone else not get their rewards?

Are you the leader? my alliance had 15 members on 3/31 and I didn't get the 20 star gems either. Like you I did get the cross legs. The campaign said to Join an Alliance and technically I didn't join an alliance I created an alliance, I am hoping it is just a bug though.