Please check whether you transfer your data via the 2 export types (catalogue, offer/product file transfer).

For this, the corresponding catalogue, but also this setting, must be active:
 

Check which data are contained in the offer file (Setup > Markets > Kaufland > Settings > #Account# > Tab: Offer Settings).

Using your EAN, you can search for your variant with Ctrl+F after you have updated the offer data
 

and downloaded a preview