American Express Linked Online Bill always shows $0 due

I have had a problem with American Express not updating the mount due each month from the linked bill, it always shows 0 (severally throwing off my monthly cash flow projections). Sure I can remove the linked bill and manually update it but it's a pain.

I have balance due in like 10 days however if i remove the linked bill and go to re-add it i get a list of all accounts I can link with, American Express appears and shows the correct bill due date but shows a $0 balance there (which when you login the Amex website is not the case).

Has anyone had this issue and resolved?