Sorry that you had trouble checking out. You should probably call us or email us directly if you need more help, since the forum is not generally a good place for discussing order problems.
Anyway, I checked the server logs, and it looks like the highlighted field was the city name, which you entered as “Lanus (Este)”. The problem is that our server does not allow parentheses in the city name. If you can enter either “Lanus” or “Lanus Este”, you should be able to check out.