Have I sent a refund or not?

Hi there, quite confused as I thought I'd refunded a buyer some days ago at the time of cancelling a transaction - but now when I check, Ebay says 'cancel pending' and 'please refund the buyer by July 11'.

I've never processed a refund before but from what I can find online, it seems that when you cancel a transaction ebay automatically refunds the buyer. I also remember taking some step that involved refunding them, and ebay telling me that the refund may take up to 5 days to process. I also can't even see a button anywhere anymore to process a refund.

However I also don't see anything relating to a refund being in process on my PayPal account.

Have no idea if I should now refund them via PayPal - or if the refund may already be in process via ebay. Just confused that it's telling me to refund after I thought I already did.