Spring toggles don't have screws that will fit you specific bracket.
A slim piece of timber glued to the back of the hole will allow secure fixing with the current screws.The timber will need to be fed up into the hole , a bit of a fiddle but will give a very secure fix.
A slim piece of timber glued to the back of the hole will allow secure fixing with the current screws.The timber will need to be fed up into the hole , a bit of a fiddle but will give a very secure fix.