Replacing hinge on oven door

I have an old Homark oven with a pull down door. The hinge has broken. Not the hinge attached to the door but the hinge catch inside the oven frame. I have taken off the side panel to access the hinge but can’t seem to fathom out how to remove this as the screw/bolts holding this in place seem to come from the outside. However there is an exterior cover to the oven preventing access to these screws/bolts. This panel has raised circular sections directly infront of where the screws/bolts are indicating that they must be accessed from the front.

Does anyone know if firstly I need to remove the front panel and secondly how to do this as I don’t seem to be able to find a way of doing this i.e. I can see any screws to loosen it.

Thank you