Odd situation. Booked MC tickets on delta.com and selected the seats on all 4 legs. 1 is Delta flight, 1 is KLM and 2 are AF. When I got the email it showed none of my seat reservations took. Went to My Trips as was only able to select non-preferred seats on DL flight, preferred gave me error below. All rest of the flight gave me the errors below.

What's going on?