Thanks for your help.
It's like the first situation, it seems to allow me to login (I get a text code to enter from my phone) and the "color swirl" appears for a few seconds - then I am back at the sign-in home screen where it says above the username field "That doesn't look like you Mint user id. Try ******" This is frustrating since it appears I can use the same Intuit user ID for each service, so I don't understand the error.
I tried several different browsers on different devices, same results on each - not specific to my browser or platform.
