Many things have been written in that thread on this topic all based on speculation. What we know is that they have ceased operations entirely and have intentions to return at some point. It is clear that they aren't simply taking a break for Chinese New Year.
Given that they felt the need to cease all operations and communication entirely, we can surmise that whatever happened poses a serious threat to their business. Otherwise, why would they endure the loss of sales and harm to their reputation?
We can further deduce that if the threat is serious enough to cause them to cease all operations and communication, then it is likely beyond their control. That being the case, then no matter their intentions, it is at least possible that they may not be able to resume operations.