Ok, So you speak French, explaining the horrible English Grammar?
Julio is the Administrator.
As for the message, if you don't post in a couple of weeks, you will get this message. It is simply reminding you that you haven't posted in a while. I get it every now and then, too. It is not from one person in particular, but rather from the board itself.
Now, as far as why do you have unanswered posts, it could be many reasons. People may not know the answer, you didn't give enough information, or, its possible that they were just missed, or even ignored.
Was anything clarified, zipperman?