Why do my product variants disappear on mobile devices?

Store Design
1

Hi!

I would like to work with 4 product variants.

I just activate the variants for a test product and It works. The problem appears when I change to mobile device (desapears…).

Could you help me please?

https://www.chiticris.com/products/bandeja-rectangular-red-test2

Many thanks

2

Thank you, but is not about to add an app.

I think the problem comes from the tamplate.

Thanks