Backsound and timer issue at my team's app

hey guys its me the student you help before and thanks for the help before and now i have a new issue
so the issue is i want when the time is up, i want the time reset and countdown again when it switch to new question and a backsound issue where when i press or click the correct answer it goes a wrong answer backsound
here’s the screenshot of the code


edit: this for all the code or blocks

edit: yes we take it from old thunkable video but we modified it and add something that still lack

A label’s text is never going to equal 0. Because a label’s text is a string so the closest it can get is “0” which is not the same as the number 0.

To convert a string to a number, add 0 to it using a math block.