I called AMEX just now to see if they could change the due date for me but was told that it would screw up my Delta Skymiles that I've earned. Has anyone dealt with this? I'm just curious and want to know if that was really true or not.
02/17/2021: 654 (EX), 633 (EQ), 608 (TU)
12/8/2020: 668 (EX), 630 (EQ), 630 (TU)