Panino forces pages and menus. Cannot delete

When I install this theme, it appears demo content and menus are automatically populated along with theme activation. Is this intended? It's ok, but I can't delete the demo content.

I've deactivated the theme, deleted demo content, reactivated theme, and the menus and content all come back. I've deleted the content over and over. It lets me delete one item, and then when I try to delete the next one, the first item comes back.

I've deactivated all plugins. I've reverted to default theme. I've used the "reset" utilities on Panino dashboard to hopefully get rid of the glitch.

I don't mind the demo content coming along with the theme activation, but surely I should be able to delete it, right? Any insight is much appreciated. Support access is granted in case it's needed.