Board Thread:Questions and Answers/@comment-33396724-20171215164530/@comment-99.248.3.222-20171217002124

@ Arteagaerik You have to consider if you open them all at once, all the time you are above 30 E is wasted.....you could be earning more E.......just open one box when you think your E will be used on new challenges beacause you are seeing alot of active (no matter the rank). For eg.   You are finding a lot of actives but run out of E, you open one box add 15 E and then only find two active challenges then inactive.......use the remaining 9 E on returns then wait let your free E charge up again........hope this makes more sense CanadianOracle