It's really unclear what you're asking here. What rep are you talking about? What do you mean by *** private beta? :S
Anyway, the site was close because of this:
Most private betas have 5-15 questions per day. This number spikes up by ~2 when you go public, and then this rapidly declines to rock bottom (~2-4 q/day) once the initial commiters run out of questions to ask. After this, for a good site, there is a slow, steady increase. For example, RaspberryPi.SE started off at 14, readchedreached 15 at some point (I think), and then went down to 4. It's now at 5.
Keeping this in mind, one can't really expect this site to be anywhere close to the other betas when its initial q/day value (which is supposed to be more or less the highest) was less than the minimum q/day value for any other beta. In fact, most betas reaching this point (and staying there) get closed (cf Astronomy and TheoreticalPhysics).
Regarding rep: You lost your rep on that site when the site was closed. Makes sense to me, what use is rep on a nonexistant site? It is meant to be positive/negative feedback within the system of the site. The fact that the site was closed was an external effect.