Hi mocker,
Kindly read the FAQs  

https://www.flyordie.com/games/help/support/contents.html

  
before contacting FlyOrDie's technical support  

https://games.flyordie.com/s/contactSupport.html?portal=flyordie_com&lang=en

Unfortunately I don't know what the problem is. Maybe too restrictive browser settings, maybe a firewall, maybe a anti virus software. 
Pls. give FlyOrDie's tech. support a few days to get back to you. Thank you.