Thanks for the reply.
What host and port should we use?
I would recommend you to update the theme to 5.1.3 version – https://xstore.helpscoutdocs.com/article/63-theme-update
Also, please contact your hosting provider and increase PHP Memory limit – http://prntscr.com/lxcpra https://xstore.helpscoutdocs.com/article/60-xstore-theme-requirements
Regards