If there is an issue with you importing the file I highly suggest that you scroll to the bottom and manually enter the information.
You can always Save & Sign out and clear you computer cache setting and history and sign back into your account. If that doesn't work I would recommend trying a different browser.
If that doesn't help Contact Product Support so that we can guide you in what can be done to help you have that form imported. Here's the link below
https://support.turbotax.intuit.com/contact/