Forum Moderators: martinibuster
Regards,
Rosie
Kind of a loaded question, but anyway one possible problem is that the date rolled over and you were looking at the earnings for the next calendar day. Try going to the detailed reporting and make sure you select the correct time period.
If you are 100% certain that neither you nor anyone associated with your computer(s) and IP clicked on the ads then it might be worth asking AdSense why they deemed some of your clicks to be invalid (which is the most likely scenario for your disappearing clicks). But they probably won't tell.