Sorry I'm a casual seller and have no clue.
I posted item second class on 2nd March and have proof of postage.
Buyer contacted me yesterday saying it's not arrived. We've had a few emails back and forth (I've sent her a pic of proof of postage) and she has divulged that this is the second item that hasn't arrived.
I sent some other parcels dame day - and via same method - which all arrived.
It's not a massively expensive item (£25) but I am wondering if the onus is on me to offer a refund in this instance?
Anything else I can do?