Hi I've noticed that AdSense will calculate your earnings for the previous month and post these on your "Payment History" page. For example Apr 1, 2015 - Apr 30, 2015 on the payment history page shows me as £701.72 earnings. However if you run a report for exactly the same period it says I earned £751.08. Why is this? Is it because some of the clicks may have been deemed invalid by Adsense? If that is the case then shouldnt the report take this into consideration and give you exactly the same figure? This is causing me problems because I can't work out exactly how much each site I use on my Adsense account earned, because I can't work out where the discrepancy lays...