Recent change ? usage sky rocketing

May be not a bug or may be something on my end.. i've been using NextDNS for over a year and usually I reach the 300 000 request  on the 29 or 30th of the month.
this time it was reach within 10 days..  and my usage did not change.

so a 3 fold question
1) did you made any change withing the pas 2 weeks?
2) how to track down usage to see if something is wrong on my end
3) any idea ?