Step 1: Log in with your VKontakte account.
Click on this page https://vk.com/dev and click on "My Apps" menu.
Step 2: Click on "Create application" button
Step 3: Enter the fields on "Create an Application" screen > Click on "Connect Site" button
Step 4: Navigate to "Settings" tab and follow instruction on the screenshot below
Step 5: Copy Application ID and Security Key, paste them into Social Login Pro app configuration page