Good afternoon all!

First time here so apologies if I get anything wrong!

I recently bought a 1996 Volvo 850 which had no luggage cover so I managed to source one on eBay. However, now that it has arrived it appears to have the wrong fittings as well as being too narrow. Can anyone tell me if the item was advertised incorrectly or whether I have tried to buy the wrong thing?

The eBay listing:
https://www.ebay.co.uk/itm/193480587199

Thanks in advance

Tom