Great work, can't wait to see this grow. Here's few suggestions:
1.clear way to "turn on/off" CrowdRender so it doesn't do stuff in the background. I don't know if it does or not. Maybe that's the problem. So on-off-switch.
2.an option to render "one frame per computer", so that two computers don't work on the same one frame (For animations this would prove better since other computers wont have to wait for the slowest one to finish, though I'm only guessing)
3.clear, under 5 minute tutorial on how to set things up quick. (including installation on each pc, how to search ip and device name, which settings to use..)
I guess these have been mentioned before but I wanted to give hobbyist blenderer's perspective on what I'd like to see. Cheers!