I am on zoo status IX and doing assignment to reach next level X for some upgrade. But after 78% completion its down to 68% and it contuniously happen with me for three times. So how would I progress to next status. As you said on my last review, I tried many combination to incubate amazing animal but none of any combination successfully incubate amazing animals. Its impossible to incubate amazing animals. Only option to get it by collecting pieces and it takes too much time.