I was just having' problems importing from Fidelity as well. I switched my default browser to Edge and then everything started working. For another institution I had to log in to it on the edge browser first and leave the window open.... then I had Turbotax log in and it worked. Hope that helps you too.
[edit] I was just trying to help by posting the solution to my similar problem. I'm sorry it didn't help you, but is the bitching that I didn't help you really necessary??
