I noticed that one of my campaigns has only had 1 impression all day today. I figured I would see what the Adwords Campaign Optimizer had to say and I saw this message: The Campaign Optimizer currently doesn't support the language and/or regions targeted by your campaign. Now I went back and checked to make sure what the language and/or region I targeted was and it was US, Canada and Mexico targeting English and Spanish.

I'm confused why these regions/languages wouldn't be supported by The Campaign Optimizer. Any insights?

That feature is new and may only be available for US and/or English.