Toilet flush plate

Does anyone know where I can find one of these large toilet flush plates? This site is the only place I’ve found them but they don’t have any in stock at the moment and I need one asap. It’s called a Europa large flush plate and is 330mm x 195mm. Thanks! https://www.mytoiletspares.co.uk/universal-chrome-flush-plate-or-flush-push-plate.html