The item I posted wasn't as much to post as I expected. The buyer paid £5.70 postage but it actually cost £3.40, so I need to return £2.30.
How do I do this? On PayPal, I can see how to refund for the entire item, but not a partial amount.
I'm new to it all 😊 Advice is appreciated as this buyer paid immediately and I don't want the person to be out of pocket.