02-09-2020 8:51 PM
One thing is certain, you do not do returns through Emails. Ebay CS should know better.
If you accept back it will cost you even more as you will not get the selling fee refunded. Fees are only refunded if made through a case and if the buyer cannot open a case then no refund.
Buyer has to open a Case, if they are out of time then they will not be able to open a case with Ebay. They can try Paypal but buyer pays return postage.