Guild Wars 2

Can someone help me? today i didnt get like 5 rewards :/

Still happens, :/ still sometimes no chest for event ;/

Hi, i have problem. After Event “The breach” (success)sometimes i dont get reward for event, but i have reward for single bosses. Im doing it from beggining to end when event starts, im dealing huge dmg and i dont know why i have this problem, I lost so much time for it and i didnt get paid for it :/
After killing boss
[img]http://oi59.tinypic.com/2qd1l74.jpg[/img]

After finished success event(No key + rares) + no Noxius gas = no fail event
[IMG]http://i58.tinypic.com/xba1w3.jpg[/IMG]
Help me