Fitting washing machine door?

I have just had the hinge replaced on my Creda Simplicity 1200 (model no 17111) washing machine door as the old one broke off, but when I try to fit the door back on the screws seem too small for the holes in the actual washing machine. It looks like there should be another part eg two nuts, behind the holes to screw the 2 screws into, but it isn't there. Could it have dropped down inside? If so, how do I get it out?

Thanks and kind regards, Amanda