Were you surprised sometimes with some unexpected or very high fees from PayPay when you were trying to receive/send/upload/withdraw money? Post it here, maybe there is a clarification for them after all.
It happened to me when I was uploading my money into PayPal and I suddenly felt that the fee was too much. Later I found out that the fee structure has been updated. Since fee structures are clearly stated there is a less chance that the fees are charged without in accordance with this.