Interesting. Lorem ipsum text is something we often use in web design and media publishing as placeholder text where real content for testing or where we need to represent real content which hasn’t been written yet. It looks like Latin, but it isn’t, it’s just nonsense which has a spread of letters similar to those found in the English language, so it gives a good visual of what a block of English would look like in place.
Strange that you got it as a private message, possible they were testing something about the message system and accidentally sent some live messages which were meant to be dummy runs.