1) Provide us with WP Dashboard and FTP access. We’ll check if it’s possible to implement that with our account form.
2) You can disable sidebar for all the pages in Theme Options > Blog > Blog page.
If you want to disable the sidebar for a single page then go to Pages > edit page > scroll down to the 8theme Options > Sidebar Position > choose Without.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.