How to upgrade NSX 6.3.1 licenced through VMUG Advantage

[VirtualOz]

I am running NSX 6.3.1 Build 5124716 in my study lab.

Now 6.3.5 is GA I was planning to upgrade.

But as the licence key is not registered in MyVMware portal so I am unable to download the NSX for vSphere 6.3.5 Upgrade Bundle.

Question is how do you download the 6.3.5 Upgrade Bundle for NSX licensed through the VMUG Advantage Program?

Or should I be able to register the NSX licence key and download??

I have tried unsucessfully the register the NSX licence.

The licence key is valid and verified via the license tracker tool.

Thanks