ludmilasv

@fahadmahmood it means the following:
one type of product is a pack with cat’s food. You can buy the packs separately, any number.
Another type of product is a box with 12 packs. For this box you can set this property “manage stock via other products” and in a select field choose a product – for this box it will be the packs.

But again, this checkbox “manage stock via other products” and the corresponding select field are a custom feature of the theme.

@fahadmahmood thank you for the quick answer!
My diagnostic was wrong. The cause was not multiple types of the variation, but a setting “Manage stock via other products”, which is custom and therefore do not work with your plugin.