Hello,
I would recommend you to post new questions in new topics.
1) You need to create a mobile header – http://prntscr.com/pk29yc Watch this video – https://youtu.be/RbdKjQrFnO4
Also, update the theme – http://xstore.helpscoutdocs.com/article/63-theme-update and Core plugin – https://xstore.helpscoutdocs.com/article/37-plugins-update
2) Try to change 520px here – http://prntscr.com/pk2caf to 26vw.
Regards