I have taken the time to show how I did it, starting from here:
This takes me to the page:
I filled in my Name, Email and Password, and then clicked Sign-Up.
This showed up:
I got an email to join "Meta Stack Exchange":
I clicked "confirm", then went back to Materials Modeling and clicked "Follow", which lead me here:
Then I had to confirm another email....
There are currently no plans to change the configuration or analytics inherent to Area 51 at this time. See What's going on with Area 51.
Incidentally, those reputation thresholds were established when question votes were still worth +10 before they were lowered in 2011, so the question-answer values are simply back to where they were when those thresholds ...