Greetings and salutations and welcome to Lamborghini Talk, Bully69!

I'm interested in knowing how a plate fell off. Was it not screwed on? As Russk pointed out, that is the usual procedure. I've never heard of this happening on the rear plate...the front plate, maybe, if the car doesn't have a proper mounting frame to accommodate a plate (as some cars don't since their state/province doesn't require a front plate), but I've not heard of such an issue with the back plate.