Why does my product variant appear unavailable when it's not?

Hi all, I have a question regarding one of my products on my webshop, specifically this one:

https://shop.mojokite.com/collections/tablas-surf-surfkite-direccional-kitesurf/products/mojokite-surfkite-limited-edition-kitesurf-olas

As you can see, the Size variant buttons are striped through diagonally, which make it seem no size is available (even though the border AROUND the size is black and you can change the selection of size):

In the backend, all sizes are available:

Anyone has any insight as to how to change this? It seems to be only with this specific product, while the template used for the product is the same as any other…

Thanks.

Hi @mvdg1990 ,

This error may be because you entered the name variant. You enter the special character " or ', so javascript error occurs.

Solution: You should not use the " or ’ character, you can try renaming the variant.

I hope it would help you.