In the past I already used wgzimmer.ch for room search when I lived in a small Swiss town, I almost always received replies.
Yesterday I have sent message to 8-9 people to find a room in Zurich. I have only contacted the OPs who posted in the last 48 hours. Each of my message is personalized and each time I received an Email confirmation that my message was sent with success.
Till now there is not a single reply.

My guess would be either they are overwhelmed by messages hence choose not to reply everyone, or there is a problem with the website now?
any thought?
Thanks