Can anyone help me figure out why the Message+ app I just installed won't do anything? The conversation list stays blank, can't send any messages at all. It just says "sending" for hours. It acts like it is trying to sync, but nothing. I've restarted, reinstalled, nothing. I installed it on a work computer, which sometimes the firewall blocks music streaming, etc. but not much else. I have no problem with other messaging-type apps such as Lync, Hangouts, etc. Any ideas? I've added it to my allowed programs in windows firewall, and the security essentials doesn't appear to be blocking it either.