Thank you for your comments !
Ok @kalayaan now I know how to upload my pics and thumbs correctly 
I understand why the admin decided to hide the uploaders name , I just thought it was an option that every member could choose to show or not ...
@AnythingOld I didn't want to be "private" it was just a question, because I don't mind being thanked or asked directly for details or what I can post or not.
