If the quality filter is enabled (enabled by default on the creator's side), if a client cancels a request before the creator approves or a creator cancels a request, the amount must be increased from the previous time.
Every time a request is received, a creator receives many notifications.
Even if you send a request using general email and bank transfer, it is difficult to change the body of your request once it has been sent, so please think of the additional fee as a fee for the creator to check your request again.
For more information, please see the confirmation screen before cancellation.