Loot from VOA 25 dissappeared due to restart

Hello,

I would like to ask you, if there is anything what could be done with the fact that we have killed VOA25, we have gave 2/4 items to ppl since they were rolling, and then server fall down. After server fall, we logged in 2-4minutes, and loot was gone. Noone had it in his inventory, and Boss had NO loot. I believe that there was few moments rollback, however we have all still Instance, so it does not make too much sense.

Is there anything what we can do?

No, there isn't. From what you're saying, the server crashed before the characters were saved with those items, but after already having been saved to the instance, so when it came back up it loaded the last save, which was before getting them. Unfortunately you will just have to get the items to drop again.