I appreciate you performing basic troubleshooting steps to fix and reactivate your contractor, @idf_8c4e6f40-062.

Currently, we have an ongoing investigation where the lists of contractors are not showing on the page. Rest assured that our product engineers are diligently working for a fix.

Also, to ensure you'll get an update about the resolution status, I recommend contacting our support team. This way, they can add your company to the list of affected users and provide this investigation number for easy tracking: INV-59689.

Here are our business hours so you can reach us at a time convenient to you. Then you can follow the steps below:

1. Sign in to your QuickBooks Online company.
2. Select the Help (?) menu.
3. Choose the Assistant tab.
4. Click the Talk to a human option.
   
   
5. Select Get help from a human.
   
   
6. Click either Chat with us or Have us call you button.
   
   

Once everything is settled, you can use the information presented by my colleagues above on how to reactivate a contractor. Otherwise, you can utilize this to help you manage your workers in QuickBooks Online: Add, edit and inactivate contractors. 

Thank you for your patience while we work for a fix. Please know that you can always get back to this post if you have any other questions with QuickBooks Online. I'll be more than happy to assist you again.