2) We updated preview image and probably Envato sent you email. We did not release the new version.
3) Because you can update theme in few different ways as described here https://xstore.helpscoutdocs.com/article/63-theme-update
If you checked the notification once you should get that. Check the spam folder.
If you don’t have notification there then provide us with access to your 8theme account and we’ll check the issue in more detail.
