Did you enter any Qualified Education Expenses into TurboTax?
If not, you are correct, you wouldn't qualify for a Lifetime Learning Credit.
If you did receive the credit, it would show on your Schedule 3, Part I, Line 3 so check your saved PDF copy of your return.
Otherwise, try closing TurboTax, clear your Cache and Cookies, and try to Efile.
If you get the message about upgrading again, you should be able to decline it and continue.