Thank you, @Candice C , really appreciate the help. 

I've opened Quickbooks Online in a new browser and I've clicked "Update." My Paypal banking feed shows recent transactions, including those that occurred after the refunds were issued, but still does not show the actual refunds. I see the transfers where we added money to Paypal in order to be able to pay out the refunds, but not the actual transactions where individual amounts were refunded to customers. When I run a report in Paypal for transactions over the month of July, I see all the transactions I am looking for, but none of them appear in my feed. 

If you have any suggestions as to how to ensure these transactions show up in my feed, that would be greatly appreciated. Thanks again!