Hemingway Rewritten to own domain

Hi!
I’am trying to help my friend. She has a wordpress blog – and upgraded version fo Rewritten theme. Now she wants move her site to own domain. We did that and downloaded Hemingway Rewritten via ftp. Fine, but can she some how use her upgraded features anymore?

Also I have problems to change coverphoto. If I use Hemingway theme – it shows, but it’s shows only half of the coverphoto. In Rewritten it doesn’t show at all.