When approving time from tsheets, I get the message that I am not an approved partner. How to fix that?

Welcome to the Community, @aceconcreteinc. It's an honor for me to answer your first post. 

In TSheets, there four default user types that define permission levels. These are: 

• Administrator - Has all permissions. 
• Payroll Manager - Can view timesheet reports for all team members and Approve timesheets for all team members
• Custom: None
• Worker: None

Approving timesheets in TSheets requires you to have the manager or an account admin access. These are the only authorized person that can perform tasks for their team members. 

I'd suggest you contact your admin to verify your permission access in Tsheets. You can also share and read through this article to get more insights about how to access team member details: Team member settings and permissions in TSheets.

For future reference, check out this article to learn more about approving or rejecting hours using TSheets in QuickBooks Online. 

Thanks for visiting the Community, @aceconcreteinc. Come again if you need more assistance or questions in mind about QuickBooks. 

I just got this message as well, and I'm the master admin. Have been for years. What is the fix for this?

Thanks for joining this conversation, @21machine.

Since you're already the master admin in your account, it'd be best to contact the Tsheets Support team. They have tools that can pull up your account in a secure environment and check the cause of this odd behavior.

You can reach by visiting this link or on your mobile device by following these steps:

1. In TSheets, at the top left, tap the profile icon.
2. Select Help & Support, then Contact TSheets Support.

To learn more about managing employee hours using TSheets in QuickBooks Online (QBO), consider checking out this article: Approve or unapprove employee hours using TSheets.

Please let me know how the call goes or if you have any other questions, and I'll get back to you as quickly as possible. I want to make sure everything is taken care of for you. Have a great day!