I believe that I will be able to send you a message when you have created some space in your box.
How much essence do we get again? Sorry that I never remember. I didn't think it was very much, but it looks like maybe it is 50?!?! That is well worth the effort, not that it is *too* hard to at least reach community prizes. I am barely reaching the first dragon prize, but I didn't activate my second den on any of my accounts. Thankfully I'm not that excited about the second dragon. I'm so glad to get the 10 keys, too, but then I got depressed when I realized that I now need 55 keys for my next expansion, so it is going to be a very long time before I can open another space on 2 of my islands.
I hope my accounts get sales so I can get gold to activate second nests and buy new habitats tomorrow!