Someone requested that the plugin create a sample villager chat .TXT file if one doesn't exist. So the first time you run the plugin, it will create a sample file "FredashaySpigotVillagerChat.txt" (if it doesn't exist) containing several sample villager chat messages.
As I said once before, each line of text is a separate villager chat post. Don't spread a villager chat post across two lines or put line break within a villager chat post, or the plugin will see it as separate chat posts.
Also, edit the TXT file only with a text editor like Notepad or VI. Don't use a word processor like MS Word or Wordpad, as these will put hidden meta characters in the file that will confuse the plugin.