Can you tell me why 3 of us are getting 3 times less coins and traces of valor than the other 2?

This happen multiple times, and most of the times I was the only one who was getting way less than the others..

I notice that this happen when you are the highest level or CP among the group.

I've found that this not a bug.

It happens because they applied the 300% Hot Time buff from the 3 scrolls sent to you daily, which grants 300% more loot quantity. This stacks with combat and advanced combat buffs, goblin altar buff as well as pet skill effects. I'm getting 350% drop rate typically.

I don't believe it has anything to do with the buffs (or perhaps not working). I have applied the ones you've mentioned and it makes no difference. Only difference I can see is that when there isn't a full group, for some reason, I get more, even though the numbers off kills isn't vastly different.

Perhaps there is a bug that prevents the effects of the buffs from being applied or something?