u/Flowersandbs

I’m in the UK. And I got my smart car last week, over the past couple of days, what I think is the splash shield has been flapping under the car and today with the force of the winds and so on, it’s completely come apart and now dragging against the floor. Which part would I need to order to replace this? I would appreciate any advice please

Edit: sorry forgot to mention it’s a forfour.
And thank you to everyone who’s responded so far.