I have a buyer who purchased two identical items from me in two separate transactions.

They have paid for one of them straight away.

But they contacted me about the other one saying they made a mistake and only wanted one.

They asked me to cancel the other unpaid one.

I raised a cancellation request, but they have not clicked AGREE. I sent them a message asking them to complete the cancellation by clicking AGREE. But no response.

If they never do this action what happens?

Does it self-cancel after some time?

Do I lose my FVF if they never click agree?