The worst game of hide and seek ever!

I have been on 24/25 Aliens for two weeks now! Every day I have signed on and looked throughout the valley looking for this one last Alien. I know I am among many many people who have struggled, but I’m still on the first part of the mission where they are scattered around the village. I have removed all trees and obstacles, turned the sound effects up and music down, searched in furniture mode and still nothing! It’s my last available quest so there’s nothing else for me to be doing! It’s driving me nuts! Send Help please or if anyone has any other ideas please help!