We have a Zen Mini Mk III that used to work fine until a couple of months ago. Now the Sense app can't find it (on phone, iPad or Mac), even though it's definitely online. I can ping it from the Mac, and I have a Wireshark trace of the Sense app's attempts to talk to it. It appears that the Sense app connects to it and sends an HTTP command ("GET /api/system/system_details HTTP/1.1\r\n"), and then drops the connection before the Zen Mini replies (which can take three or four seconds).
Suggestions welcome.
Suggestions welcome.