Windows Live Mail 2012 stopped downloading new messages (and maybe uploading, but I haven't tried sending a message yet).  When I click on Send/Receive, the program says it is checking mail but it doesn't find any.  I've checked online at www.live.com and can see a bunch of new messages and they have all been synced to my Android smartphone.  I am using Build 16.4.3564.1216, which I believe is the latest version.  How do I fix this?