Hello There,
Thanks for updating this thread. Where did you get the theme, from Theme Forest? Before uploading anything, please make sure that you are uploading x.zip file. Please DO NOT upload x_package.zip because this is not the correct file. If you want, you can download a fresh copy of the theme x.zip from your dashboard (https://theme.co/apex/dashboard) and upload it in Appearance > Themes > Upload.
If nothing is helping, we kindly ask that you open your issue in a separate thread along with your login details in a secure. The longer threads get in the forum, they become more difficult to support as they tend to drift off topic and they also make it troublesome for users trying to search for solutions. Keeping threads relevant to their original inquiry ensures that we can keep better track of what has been resolved and that users can more effectively find answers to similar issues they might be experiencing.
Best Regards.