Niantic Campfire app - Access is currently limited error

Hello, so here's Niantic Campfire. When I'm trying to sign up, it's a Google app or Facebook, here's what I see, and I just want to show it out with you. "Access is currently limited. Keep an eye on our official channels for updates." That's basically that, so sign for checking out Campfire.

Something around it, I don't know. Is there some limited access in some countries or is just there is some waiting list? I'm just pretty curious to try out this app and see how it works. This is like a social media for Pokemon Go lovers, I guess.

Niantic is the same company which built Pokemon Go. Hope it can be helpful. I don't know. If you have any suggestions or you're already using this app, just leave it in the comments below.