I've tried unchecking and rechecking the box but it still shows the "Fix Federal Return" button and won't let me efile. Is this a bug in the system?
There should be a page in the step-by-step section of your return where you can answer the question about disaster distributions with 'No'. If you entered any Form 1099-R in your return you will have already seen that question one time, but there is another one out there for users who did not enter any Form 1099-R information.
Please try the following steps if you are using TurboTax Online to see if the error message will clear:
If you have tried these steps and you did not see a question about the disaster distributions in 2020, then repeat the steps for the Deductions & Credits section of your return until the question is located.