Product Variation Creation Issue

Hello Everyone!

I added attributes to my products and added variations by Pack Size & Color family.

In the “general” section, I gave a parent SKU eg. 1235 and for variations I added
1235-1
1235-6
1235-12
1235-24

the issue is here, when I save the product, and I refresh the product page everything is working perfectly but when I want edit these variations all the “product data” section get disabled and I can not edit anything.

I’ve added a link redirecting you to the screen shot of the product page issue.
I hope anyone can elucidate this to enable the product data section.

Yours,

The page I need help with: [log in to see the link]