Something else on this topic - We have TSA Precheck. When we went through the TSA Pre-Check line in Orlando with our
DCL printed Boarding Passes, and Pre Check was printed on them, the TSA officer said the boarding passes rejected on the reader. We had to go to a Delta kiosk and reprint our passes. Those "passed" the TSA reader. The TSA officer said there is an issue with the DCL printed passes - guess it happens a lot. I haven't contacted DCL - yet.