Hey!
Taking a look into the manufacturer’s page on this product this part seems to be built from cheap plastics and not intended to be user-serviceable, in which case it is going to be rather hard to get the replacement part, also the screws used are not of a standard bit shape, that also makes the fix harder. If you have the bit perhaps opening and taking a closer look at the part and craftily repair it with some run of the mill epoxy resin, I would recommend against super glue as its solvent has a tendency to destroy plastics.
Cheers, Enzo