It was a long time ago when this special missions were available. I've send a ticket to support, but I didnt recieved an answer. After a week or two i quit the game for really long time. Now Im came back to see whats new and decided to try again. So mainly I have issues with missions since 2016 when I've started playing, I can tell that many people have same problem. Sometimes I complete mission and dont receive the rewards, sometimes I cant see missions, but in last time I've completed ZP mission and get rewards witch was hilarious for me. Last mission I remember was mission with reward for AUG Raptor Skin which i didnt recieved also (I have no screenshot ). So I leave a sources down bellow, Best Regards. Happy Easter.
Actual IGN: EndZee`