How do I get Photon Thunder?

Sorry I didn't know where to put this as there's no Photon Thunder sub forum.

I'm trying to get Photon Thunder Early Access, but on this site https://www.photonengine.com/en/Thunder
When I click the "Get Early Access to the Unity SDK Now " button. Nothing happens except another browser opens, and stays on the Chrome homepage.

Help, please. I think Photon Thunder looks EPIC.