One of the most important is, Zefiris is no longer interested in continuing with Choir! beyond the next three chapters (which, as I've hinted before, contain some truly excellent yuri). After that point, there is an upswing in the amount of fanservice/nudity - particularly of pseudo-lolis Mayuko and Shirayuki - that she finds both unpalatable and an unacceptable personal risk. Zefiris lives in Germany, and Germany takes an extremely dim legal view of trafficking in what they might consider pornographic depictions of underage characters. She does not wish to be prosecuted for this, and I certainly can't blame her.
As for me, let's just say I've been having technology issues. Both my car and my computer have been consuming my attention for the past several months. It's rather amazing how enslaved we are to the upkeep of the technologies that are supposed to make our lives more convenient. It is only just now that these issues appear to be finally resolved.