How do I join the Infinitum test galaxy?

Support Questions
1

I saw that invites were sent out for the Infinitum test.

I don’t know if I was picked to receive an invite or not, but if I was, I can not join.

2

Nobody was picked by hand; all Team members and Patron subscribers are eligible. See below for more info:

3

I could apparently join but haven’t received a message that I could - unless I missed it somewhere. I’m in now, though.

Map is humongous. O_O