The description for coal reads: "you can get coal by completing challenges and combat missions, or in daily containers" I understand that containers are chance. HOWEVER, I've completed 3 challenges and combat missions, and none of them have dropped any coal (other than the "coal for everyone" thing, which is not one of the 3 i mentioned). Hello??? I've also read that coal is dropping in the i-tab in port, is this true? If so, how do we obtain it?