Hi marcio.martins,
Thanks for posting in the Microsoft Community.
I recognize the significance of this matter. With regards to your inquiry, the presence of the "forbidden" icon when hovering over the sub-menu option might suggest that you lack the required permissions to add a new sub-page to Loop.
To add a new sub-page to Loop, you need to have the appropriate permissions. You can check with your administrator to ensure that you have the necessary permissions to add a new sub-page. If you're still having trouble, you can try logging out and logging back in to see if that resolves the issue.
In the meantime, you may attempt the subsequent procedures:
- Clearing the cache and cookies in your browser. Afterwards, please retry the process of creating a new workspace or page.
- Explore the possibility of using an alternative browser or device to observe if the problem persists.
Hope this information proves helpful.
Regards,
James P.
Microsoft Moderator