PAge Builder upgrade 6.8.0. does not allow you to create new pages

Joomla 6.1.2 / SP Page Builder Pro 6.8.0. Existing pages can be opened, edited and saved successfully. Creating a new page creates the database entry, but the subsequent page/title operation returns “403 – You don't have permission to edit this page.” Duplicating an existing page succeeds, but changing the duplicated page title also returns 403. The Joomla account is Super User. Existing pages created before the 6.8.0 update continue to work.