This might be a silly question: but how do I get to the German Hertz Facebook page when Facebook defaults to the US one? Or is it the same? I'm not very familiar with Facebook.

I rented the cars in the US, IAD and LAX to be precise.

I just talked to my sister in law and she had a couple of rentals through ADAC as well and didn't get any points, but the rental shows up in her Gold history.