Error message when trying to return an item i purchased as a guest

[rr_rri_iho4xke8zd]

I receive the following response when i click on the "see return details" button on the email that ok's my return. I don't have the information needed to return the item without opening the email. Is there any way to get help?

[rr_rri_iho4xke8zd]

Text of the ebay page: "We couldn't process your request because of a technical issue. Please try again.