I just reported this very issue to tech support Ticket# 3270430. I rely on this feature for paying bills and I've missed a couple recently because of no reminder. I heavily depend on this feature. I have made no changes except for updating Evernote. I am currently on v 10.8.5 for windows but I believe the problem started before this particular update. There have been several updates recently. I'm going to open a new thread with this information, too.