Add To Cart, Variant selector and Quantity

[Joeri1]

Hi guys,

Im now struggling for 2 days..

My website: https://www.candybar95.nl/ 
Password: Joerie01

Okay, on a collection page i've added a Add-To-Cart button with quantity selector and variant selector.

On the page Mystery box I have two different items with a Add-To-Cart button etc.

The first box Movie Box + Pathe Giftcard is okay when you select let's say €35 variant and add this to your shopping cart it will be added.

When you try to add item Mystery Box its fine until you want a different variant it only adds the first variant?

Someone who know more about this?

Let me know when you need more information!

Thanks