Hi Laurent,
Thanks for reaching out to us.
First, make sure to update SP Page Builder to the latest version if it’s not already updated.
Next, ensure that your PHP version meets the technical requirements for SP Page Builder, as this can often resolve compatibility issues. After that, clear the Joomla cache to refresh the site and eliminate any lingering issues.
Finally, once these steps are completed, review the menu item links again to ensure everything is functioning correctly.
Let me know if you need further assistance!
Best regards,