Zend certified PHP/Magento developer

Grouped products out of stock when used as child of configurable product

I have a product that has to have a color swatch. This product is compound by a 3 inks and a 3 color fasteners. First I tried to use a bundle product, but I wans’t able to show the color swatch once its options isnt attribute managed. So I tried to create a grouped product for each color (3 inks and 3 fasteners) and added those grouped product to a configurable product to show the color swatch. It showed the color swatch, but out of stock. When I access the grouped product directly It has stock. Any idea to solve this issue ?

Magento 2.3.3 / PHP 7.2.24 / Porto Theme 3.2.2