Dear Tanisha Lister (tkl1n23),
Greetings!
Thanks for reaching out to this community.
Please kindly try using Outlook on the web to change the working hours and location settings. Wait some time for it to sync. And then restart Teams desktop client. (Right-click Teams from task bar and select quit, then open it again.)
You may also kindly check this similar thread: How can you change your work hours in NEW teams? - Microsoft Community.
If the issue persists, this could be related to backend service issue. Please kindly try contacting your admin to generate a service request to our online support****through the Microsoft 365 admin center. Please believe that support agents with more privileges and resources than us can best assist you. Please check: Get support - Microsoft 365 admin | Microsoft Learn.
Thank you in advance for your understanding! Your patience and cooperation will be greatly appreciated. I hope all the best!