Hi MayaraCarneiro1,
I understand you have the correct subscription to use Office apps on your mac, but you keep getting the error.
To troubleshoot the issue, please try the following suggestion:
- Quit all the Office apps app. For example, if Word is open, you'll go to the upper left corner of your screen and click Word > Quit Word, repeat the similar steps for other Office apps.
- Download and run the License removal tool to remove all the Office keychain entries.
- Start any Office app again and follow the activation prompts.
If the same issue appears after signing in, check if you see "Use another account" option, click this button, sign in again with the same account. You might need to re-start Office app.
If the issue persists, please confirm from where you installed Microsoft 365 apps.
Regards,
Neha