Replacement Parts for Breville BPZ800 Pizzaiolo

Hi all!

I won a Breville Pizzaiolo (Model BPZ800) back in 2019, I absolutely love it. However, today after the oven cooled down I noticed a huge crack through the stone. Unfortunately, it is in different shape than the current Pizzaiolo stones. Does anyone have an idea where I can get a replacement stone? I’ve checked Ebay, but there are no listings for my model. Any advice would help a lot! Thank you!