@Franc

When I try to access your site I can an error message “This site can’t be reached”.

Make sure you follow these instructions to update the theme, http://support.themely.com/knowledgebase/how-to-update-your-theme/

Also, make sure you are unzipping the file you download. The theme files are located in there.

If you upload the file without extracting it, you will get an error message.