Thank you for getting back to us here in the Community, @drice11089.
I know this hasn't been easy for you. I'm here to make sure you get pointed in the right direction.
I understand you are using QuickBooks Desktop for Mac 2021. My colleague above already provided the steps to perform troubleshooting steps. If the issue with the bounced check is still not resolved, I recommend contacting QuickBooks Desktop for Mac chat support. This way, they'll be able to check the cause of this issue and assist you further.
You can also check our Help articles that contain helpful tips for QuickBooks Desktop for Mac. You can find common questions and answers that can help you with other concerns in using QuickBooks.
Let me know if you have additional questions about using the bounced check button QuickBooks Desktop for Mac. I'm always here to help. Have a great day.
