This app doesn't work by itself. You should install Bitrix24-server https://www.bitrix24.com/apps/?app=htmls.vscanner
Business Card Scanner – it's very simple to convert business cards to your Bitrix24. Take a photo of business card and it will import all card data directly to your Bitrix24 CRM.
For correct working you should install "server" to your Bitrix24 from Bitrix24.Apps (https://www.bitrix24.com/apps/?app=htmls.vscanner). You can find more information by link http://www.bx24.mobi/vcard24/