Received an invoice but don't understand. Help!

Hi.  I'm new to booking.com and have just received an invoice for 32.80.   It says reservations 202.40 and commission 2.44.

I receive my payments through booking.com every week.  So far I have received 2 booking.com payments.  When booking.com send me the payment it is with commission and charges taken off.  For instance on an amount of 108.44 I received 92.33 once the commission and fees were taken off.

So what is the invoice for, as I have already paid commission and fees.  Could someone help explain as I really don't understand and if this is correct then I will have to increase my room rate or maybe concentrate on AIRBNB as they seem to be taking a lot of money.