thre were errors at halloween, help said it was errors when it was every odd level, the times ive played it since then all levels have the boosters, this is just 2 odd levels, makes no sense that is on purpose in that pattern of just 5 and 7
I think the point of the missing rewards is to differentiate the Free Pass from the Gold Pass side. So in that case I find the two missing rewards to be perfectly 'logical'