Variants not changing price when selected, also not able to add quatities.

[Kevdog]

We are trying to sell multiple shirts to an event that we are having.  We have options for different shirt sizes along with prices for the larger shirt sizes.  When we view the product on the site the price does not change when choosing different sizes.  Also when adding different sizes into the cart they always default one size.   It will also not allow for you to add to the quantity if wanting to purchase more then one.

[Kevdog]

https://www.simplestories.com/products/crafty-babe-2024-retreat-t-shirt-soft-pink-1

https://www.simplestories.com/collections/retreat-merchandise