Please see the information below for assistance:
https://ttlc.intuit.com/community/after-you-file/discussion/oops-it-appears-there-was-a-drop-in-our-connection-comes-up-when-i-try-to-get-my-return-started/00/429909
If you are still unable to get back into your return, please contact customer support by following the instructions below.
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
: