Hi,
I recently got the Delta SkyMiles and then booked a Delta flight directly on the Delta homepage (DELTA 9347 and DELTA 9380).
To my understanding I should have free baggage which is one of the reasons why I got this card.
Now I checked in already and no word about free bags -- they want to charge 60$ per direction!
I see that these flights are operated by KLM (KL Flt 608 and KL Flt 605).
Can it have anything to do with that?
If yes:

How can that be?
If no: What am I missing?