Phuong, I work on the extreme portal team. Very sorry you hit this issue. I can see in your screenshot that you are facing our no account association situation. Sometimes, when a new user registers they get put temporarily in an account/company called "No Account Association" and this causes lots of problems on the Extreme Portal as described in this knowledge article:
No Account Association. We are working on improving and fixing this process. I will work on getting your records associated to a proper company/account record. I will email you to get some additional information for that. If you face any urgent technical product related situation, you can http://www.extremenetworks.com/support/contact/ and they can assist with verifying entitlement and helping you with getting the firmware
