I had the same issue last week, also for a DL-issued KLM ticket. I was able to view the itin though by selecting "
View All of Your Trips and Itineraries" and putting in the confirmation code. Getting it to show up in my trips was tricky: the travel agency put the dreaded "MR" on my name and my SkyMiles-# was not matching the name as result. A quick call corrected that, however, KLM is showing the wrong status now and I cannot buy an EC seat ...