info on plugin and postage

Hi, I know this is probably not the right place to ask the question, but it seems that customer support is non existent.
I have emailed [email protected] as I installed the plugin, but i need Organization ID & Token info from them to set it up.
4 person had read the emails, as I have a receipt, but no reply.
Phone advisor, said that have nothing to do with that, and that I could make a complain form, but web form it is still useless, as I am not a customer yet…
Question:
Can i use the service to post abroad, or just within Italy?

Thanks in advance