Submit button working while reviewing quiz

It's hard to troubleshoot without seeing the .story file. 

Did you add triggers to your question slides to show the Submit button? If you use Storyline's question slides, the Submit will automatically appear when the user is taking the quiz. And, with the default programming on a Results slide, the Submit button will automatically be hidden during the Review Quiz function. Instead, the program shows the PREV and NEXT buttons, so the user can move through the questions--but without being able to re-answer them. 

Using the built-in functionality of Storyline quizzes (that is, Graded questions and a Results slide), you could accomplish what you want without any special programming.

Do this on each question slide:

• In FORM VIEW, adjust the point value so that each question is worth only 1 point.

• • • That will make the value of the built-in [Quiz]ScorePoints variable equal to the number of correctly answered questions.  (Note: Storyline automatically adds the built-in variables to track quiz scoring when you insert a Results slide.)
• If you want to show the score as the user progresses through the quiz, insert a reference to the [Quiz]ScorePoints variable. That will automatically update the score when the user clicks the Submit button. 

The attached file demonstrates all this.