Hi,
1. Footer
– You can edit responsive here http://prntscr.com/ppxknx
2. Copyright
– Theme Options > Footer > Show footer demo blocks > Off. Go to Appearance > Widgets > edit content of Footer or Copyrights areas. Read more – https://xstore.helpscoutdocs.com/article/48-widgets-custom-widget-areas https://youtu.be/1Nu49dskD1Q
Regards,
Hung PD