This may be due to withholding taxes. When we process a payout, we withhold tax at the backup withholding rates in effect for US and non-US residents and send those amounts to the Internal Revenue Service (IRS) on your behalf. Currently, the withholding rate for US residents is 24% and 30% for non-US residents.
If you believe that any amount withheld is not due to taxes and is an error, please contact us via our Support Page, including the email associated with your account and your display name, so we may investigate for you.
Let us know how we can help you.