Why isn't the product variant selection updating in my online store?

So my store has many different products and variants for each product however when my customers are selecting lets say a medium - orange screen it is not updating and making them order a small black one.

my store is at - https://thesteelgallery.co.uk/

if anyone could take a look at it and help me out it would be seriously appreciated as we are now losing money because of this.

many thanks in advance!

Hi @TheSteelGallery ,

I tested and it works fine: https://i.imgur.com/V4tlEYr.png , https://i.imgur.com/fu6fB7q.png

Did you fix it?

You can test on another device or incognito tab, I think it will work fine.

Hope it helps!