Hi,
If you have a EcomShop containg Extended variants, then it does not seem that you can add Related products to each of the variants. At the moment is only available on the Master Product.
The Table EcomProductsRelated is also missing a field "ProductRelatedVariantId", so you can add unique Related products to variants.
It is possible to add a variant as the Related Product, but you cannot choose to have different related products on each variant.
Is it something that can be requested, or do anyone have a solution to solve our problem?