Contact your hosting provider and ask for FTP host, FTP username and FTP password.
There is no option to migrate content created using WPBakery to Elementor. So, remove WPBakery pages and Static blocks and import Elementor demo content and edit pages using Elementor or create page content from scratch using Elementor page builder.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.