Hi I am also getting the daily security prompts after adding American Express Banking High Yield account. I tried the suggestions off this discussion chain but didn't work. Is there anything else I can do? I've changed all my settings with American Express and spent 1 hour on the phone with them yesterday, given updated information. There is a page on American Express to let third party apps which is already authenticated for Quicken, but I think this only applies to their credit cards, and not banking. Can you look into this?