Our game Lumberjack Legends does have reports for December 2019 and January 2020, but the February 2020 report is missing.
I have searched the forum and seen that the Monthly Game Stats Data had some problems mid 2019. But nothing since then.
Some people mention that the game needs to have a certain level of popularity to get the report, I think that we qualify since the visit count was 300% higher in Feb than it was in Jan, and we got the report for Jan.
As far as I can see, this is caused by either:
The report is generated with a delay (currently 2 days and counting), then information about this should be added to the download report page to avoid confusion
There is a bug so the report is not generated, then this should be fixed.