Though my April billing went fine, here are some comments I made while working on it.
In Version 2.1.4, "a c; MMM d yyyy -b 1-1-13 -e 1-31-13" doesn't work (brings up April AND May hours)
Above is what I used to use. Also, "a c; MMM d yyyy -b -1/1 + 31d" shows both April and May time.
However "a c; MMM d yyyy -b -1/1 -e 1" works just fine, so I am not complaining.
And, I still can't figure out how to consistently get the save icon to light up so I can save the report query. Basically, I just do it several times and eventually the save button works. I can see no pattern.
Hope this finds you well and happy.