Apple TV3 not storing foreign locations?

Why can't I save a foreign location to My Locations on the Weather Channel app on my Apple TV 3rd generation? Currently I have 2 USA cities listed, but it will not allow me to add foreign cities/countries that I travel to frequently.

I am able to add other USA cities/states, but nothing foreign, like SXM or Sint Martin.

Anyone know how to fix this?

Thanks.