Okay, I'm shooting blind here, since I do not speak any of the languages used in Indonesia, but my good friend Google says that this is a forum discussing ETW in Indonesia. It's possible that there's some good info in there. I wouldn't know.

Also here's Steam's e-Club Indonesia. That may be useful. It certainly looks as though Valve is giving the island nation a full level of support.

If you don't know how to create a Steam account, let us know.