I finished the level 4,5,6 easy and hard and the mission counter is 0
You need to complete the special stages of Season 2, 100 times to get this reward.
Did you finish those provinces before or after you received this mission?
GI only saw this mission yesterday. I don’t know when it appeared. I supposed that was when 4,5,6 were released
My suspicion is that you received this mission upon the completion of the poison mist mission, and that happened after your completion of provinces 4, 5, 6.
Do you recall when you completed the poison mist mission?