I am a member of my company\'s development team, with the role of Admin. I can access the Member Center of the team at https://developer.apple.com/
However, when I I
If your Apple Id is added to your team account recently, you need to activate it first by clicking on the link that Apple sent to you with the activation code.
After that, you should be able to login to iTunes connect.
P/S: You may need to check your internet connection, firewall, proxy setting to make sure you can connect to itunes connect server. This happened to me as I used my company network to login. After switched to my 3G hotspot, it worked like a charm.