[City Bus Simulator 2010 Problem]

Hello,

I currently own the game City Bus Simulator of 2010. When I launch the game I'm required to register. I'm writing my registration key and my name. But when I write my name, it displays information telling me:

System error (3) ..wrong user name, please contact the support of aerosoft.

How to solve this problem?

Thank you in advance.

PS:I'm french and I use an online translator to talk to you then that is what may explain a weird writing.