I'm having the exact same problem crownclown, ive messaged the support team but haven't heard anything from them. please.or anyone else finds a solution reply back on here please.
>gay
>homophobic
Pick one.
To answer OPs question, you have to be at least a certain stage as well. I had Mako's unlock requirements done for ages before I actually unlocked him.
Prometheus
CrownClown
