It's temporarily been moved to this blog (click on the individual triangle-shaped bullet points for each source).
You can also check the official SRD listing for Hireling Manager. The Glyph of the Open Road symbol in front of the name tells us it's legal for use in Society.
That being said, Hireling Manager is not as useful as it once was, since you can now only ever slot one Hireling Boon.
That doesn’t mean a new site with better layout isn’t coming, we just didn’t want to hold things up any longer waiting our turn in the web queue.
Which is Paizo's standard "sometime later, when we have staffing, and time, and nothing else of greater importance, unless we've changed our minds by then" disclaimer.