Hello,

1- Sorry to say but we have visited your Site and checked the Product > selected multiple Variants and added them to Cart > and they were added to Cart fine. Please refer to the following Video for reference: https://www.veed.io/view/15faa6fe-2913-4222-be2e-10613f22a5d5

2- Sorry to say but right now there is no option in Theme Settings available for that. It requires Customization and this is beyond our limitations and support policy scope. Hope you can understand our limitations.

Although, the Theme has a Frequently Bought Together (FBT) option available which isn’t exactly the same but works similar to what you have referenced. Here is the Guide to that: https://xtemos.com/docs-topic/frequently-bought-together/

Hope this helps !

Best Regards