Creating user with plugin do not work when firsname or lastname with accents.

2 ways :

1- Workaround : replace all accents in firstname or lastname by non accents caractere. This is not the beatiful way but it works, just modify class "connect_class_dom".

2- Good way : fix the le curl request or datas sending

This fix is very important for the rest of the world who have accented characters.