First, click on the pencil icon next to fee that needs to be changed for the player. This will open a pop-up window where you will click on the radio button that says “owes a different amount”. You can then enter the amount the player should owe for this fee, with a transaction note saying you are correcting the mistake. This action should take you back to showing the correct amount owed for this player.
Still not sure? Maybe this article can help, “How does the payments tab work?“