Hi @fegile Welcome to our community π€ Just to make it clear, did you finished all 10 enclave levels and then 30 stars chaser ? Because if you do completed both of the challenges you should be able to collect Olivia.
Hi again @fegile how about the stars chasers, after you are completed 10 levels enclave you supposed to go back to regular level and start collecting 30 stars to unlocked Olivia.