UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Steps to reproduce the problem:
1. Go to http://yourshot.nationalgeographic.com/
2. After Login, the browser identify me as member and able to access to inbox
3. When try to post a message, the browser unable to identify me as member and keep loading but not allow me to post the message

What is the expected behavior?
The browser should identify me as member and allow me to post message as member. It was working fine on other browsers (FireFox and Safari) 

What went wrong?
The browser fails to retain my identity after I login, please refer to the screenshot

Did this work before? Yes Not Sure

Chrome version: 56.0.2924.87  Channel: stable
OS Version: OS X 10.9.5
Flash Version: Shockwave Flash 24.0 r0