Step 1: Sign in with your Mail.ru account. If you haven't had an account, please create one.
Click on this page https://api.mail.ru/sites/my/add/
Accept Terms and conditions and click the "Continue" button.
Step 2: Enter your site name and your site URL. Click "Continue" button.
Step 3: Download receiver.html. Put receiver.html in the root folder of your site > Click "Continue" button
Step 4: Copy ID and Secret key and paste them to Social Login Pro app backend
