[eddugo]

Pretty hard to help without seeing it. You may want to try reinstalling the plate if you have a drill/driver with you. Those are not bolts - they are Self Drilling sheet metal screws. You may be able to reinstall, replace the lost one if the hole is not stripped out and put a new one in place of the broken by screwing it in on an angle next to the old one. You will find those screws at good hardware stores. Lowes and HD hardware is sometimes inferior quality. Good luck and let us know how you make out.