How to remove the door lock unit on Beko WTB1041R4A

Two of us totally stumped. I’ve ordered the new part: Metalflex ZV446 F2847740500 but I had to read the part numbers squinting through a 1 inch gap as we can’t get the old one out. It has a screw on the bottom at the front, but the top, where the youtube videos all say there’s a screw, there’s just a black plastic dowl type thing. Can anyone give advice on how to remove it? We took the white plastic spring loaded door lock part off but the black unit with the part the connector plugs into will not budge.

Thank you!