Hmmm....so I just went back to my Homepage on Mint.com and found the following message:
Known Issue: American Express Credit Card (January 12, 2018 @ 7:48 AM PT)
We are currently investigating an issue with American Express Credit Card accounts. Some users are unable to add or refresh their accounts in Mint. We are aware of the issue and are working in fixing it. Please try again later.
^^^So which is true? What the CSR said about me not being able to link (ever) because there is no contract with AmEx? Or is there actually a way to link but there is just technical issues going on right now?