Ciao! ^^ I'm a new member! *D*
And... I want to help you. At least, by telling you how to fix the welcome-speech in Italian... you used a translator, right? XD
It would be better if it would be:
Hey!
Beh questo è un club per chi ama Hetalia e i rispettivi Gender Bender!
Sarete come a casa qui! Spero che siate felici e vi divertiate -xxxNi-Pahxxx
This is almost a literal translation... mostly because to translate "Gender Bending" it gives "Cambio di genere" which would not be very clear! XD I hope I was useful!