Here's a simple explanation to how often one should expect some rewards to come from his/her MN:
This is a trivial simulation of a
Poisson process with an average of 1.45 - that's our current average number of rewards per day (145 CropCoins paid in chunks of 100). I don't know whether that Round Robin thing is a Poissonian process or not, but most things in life are)
Given that assumption, it's perfectly fine to get nothing for days or to get 5 rewards a day - as we've seen with someone's MN. That's just the nature of random processes and statistics):
And here's how average (over 60 days !!!) change if I run it a few times. Just to give you an idea that having about 1.45 events a day is very little for good statistics:
168, 149, 127, 135, 133, 152,174. So imagine that those are independent MNs: someone gets 133 on average in 2 months, someone gets 174 on average in 2 months. But the average of all those numbers is 148 - pretty close to 145.