Be patient, we we're informed that there technicians were working on some arena bugs and with the next maintenance we would receive our rewards and a fixed cross server arena.

Eventually.

Pretty sure I remember seeing Daiske say things should be resolved on the 16th and we should get our rewards, but there has been no news other than that that I recall reading. So it's safe to say we should get new rewards when we get the new events on the 16th.