You will not be able to prepare Form 8962 on the Free Edition. If you are using a TurboTax Online product, you will need to upgrade to The Deluxe edition or higher.
If after upgrading to the TurboTax version you are still getting this error, remove the form altogether and enter it again. This usually fixes this error.
You can manually review a section or delete a specific form/worksheet in 2 different ways. To manually review a section, you will manually go there and click the trash icon next to the section you want to remove.
It is not recommended to delete a form or worksheet directly; instead we recommend to go over each specific section of the return from the beginning, double-check your entries and answers, and remove any necessary information.
To delete that specific Form, see the applicable link below
How to Delete a Form on TurboTax Online
How to Delete a Form on TurboTax Desktop
