Please try to Remove and reinstall TurboTax for Mac.

Please see the TurboTax FAQ's below for further assistance:

• Troubleshoot TurboTax for Mac download issues
• Minimum system requirements for TurboTax Mac software.
• TurboTax for Mac won't open when installed

I deleted the app and reinstalled and got the same message. 

Please call TurboTax and speak with an agent. TurboTax customer service/support does not have a single phone number but has many different phone numbers based on the type of platform used.  So that we can direct your call to the best person/department to help you:

1. Click on this link: Contact Us
2. Select your TurboTax platform.  
3. Ask your question / state your problem.  Do NOT use the word "refund' or you will get a phone number for tax refunds.
4. Click Submit.
5. On the next screen, choose the Call option and follow the instructions.  You will be given the approximate wait time.  

You'll get a toll-free number to a TurboTax expert who is specially-trained to handle your particular issue.

"Irene2805 Employee Tax Expert"

When I hit the "Contact Us" button, I got a screen that said the address wasn't valid.

Please use the following link to contact support.

What is the TurboTax phone number? - Community

After talking to an expert and trying a few things, it still didn't resolve the issue.