Hi Elise,
I found a plugin in conflict with the site. This is “woocommerce stripe gateway” I deactivated it and try to find a solution to replace it. But if it’s work now, there is still a problem, the first color and the first size are automaticaly selected (here, color white and size 36, as you can see with the link put in private) even if I can change and choose what I want at the end. It was not like this before the problem, nothing was underlined unless if it was choosen by the client.
Do you have a solution please?
Have a nice day.
Fred