What happen with sales?

Hi everyone, I hope all are fine.
I have 11 sales and suddenly it becomes 10!!
Are there anyone had this problem before? Any explaination?

May be you have received a sale reversal!
A sales reversal occurs when a purchase is reversed by the payment provider (eg. payment gateway or bank) through either a credit card or Paypal account. Reversals are enforced by the payment provider and actioned in accordance with their policies. As an author, your statement will be updated to reflect the reversed transaction. check your statements page.


Thank you for ur reply !