To get the achievement do you just have to get in the top 10 sometime during the month? Last night I was in the top 10 and got the reward but no achievement. Is there a different top 10 (overall not cumulative) or do I need to check it somewhere else to activate? Thank you!

The first I think 3 days of the month don't count

Oh boo, I'll never get it. Lol Thank you!

Well if your score holds up you can still get it on the 3rd or 4th, whichever it is c: