Beyond that....make absolutely sure you've entered ALL of your income and tax withholding too. Entering the credit before all income has been entered may give you a false refund reading due to that carry-forward issue.
But if you never paid in any Federal withholding during 2019, nor any Federal estimated taxes, the Credit could just be covering the taxes owed (with some left over), and still no refund.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
