Shipping for returning an item

Hi, I bought airpods and they were replicas.
Seller said return for a refund. I dont want to pay for shipping to return which I believe I shouldn't. How does this work? Thank you.
Community Helper
Was everything done on the app? If so, you can submit a buyers claim. If not, I think you have to pay for return shipping just to try to get your money back.
Yes everything was done in app...
I did not know what to do initially so I filed for a refund. So now that I did that I couldn't file for a buyer's claim.

Any idea in how to cancel the refund and file a buyer's claim?
Thank you
Community Helper
Maybe you could try contacting support via Twitter (OfferupSupport) or