Its only problem it doesn't support french or utf-8 character .
We and others use our own plugin on a couple of french sites. So we know it works. Your template is incorrectly configured. You must add UTF-8 definitions to the your own template. If your did volatile HTML standards then add xml header with encoding="utf-8" and meta http-equiv="content-type" content="text/html; charset=utf-8". This is the proper way HTML and templates work. Templates are a user problem not ours, since you can program your own templates and use other vendors that volatile HTML standards.