Hello,
Thanks for using our theme.
1/ Theme Options > Search > Sidebar Position, there is no Off-Canvas option, right now, unfortunately. You can submit a request here – https://www.8theme.com/taskboard/ If it takes votes from other customers then our developers will be able to add it to the queue.
2/ Provide temporary FTP access, our technicians will check what can be done to help you.
Regards