The page is the check out page : https://www.biomintoothpaste.com.au/shop-2/
I have done some testing and this is what I have found:
I added the code in above it still failed (stucking on bouncing balls)
I added in the video code and it now goes through to the payment pop up for stripe.
Once you enter the payment details it will accept these. The sale will register and then crash. The customer does not receive a notification email.
The site crashes on this page: https://www.biomintoothpaste.com.au/wc-api/WC_Gateway_Stripe/
With this message: www.biomintoothpaste.com.au is currently unable to handle this request.
HTTP ERROR 500