By following the advice below, you can greatly increase the chances that you will be credited:
Make sure your browser is set to accept all third-party cookies. Enabling browser cookies is very important and will ensure that your activity is tracked properly. Learn how to enable cookies for Your browser like Chrome & Mozilla .
Briefly disable any ad-blocking programs or browser extensions that may be obstructing cookies.
If you have any anti-spyware or virus protection programs (e.g. Avast) installed, check to make sure that they are not set to block third-party cookies.
If you are linked to the internet via a proxy server or public connection, try linking through some other means.