Brave Ads in other regions/Switzerland

I was hoping that Brave Ads are working with the newest stable update of Brave in other regions for example “Switzerland” but it doesn’t seem to work.
Can someone tell me if it’s now supported in the region or not? If I’m not wrong, it should work by now and Rewards shows up that ads are supported for me.

Additional I would like to know if I have to change my OS language to a specific language if I want to use it in the region… (Many ppl in Switzerland are not native in german or french)

I’ve also tried to install the beta- or dev-version on my Mac but this versions end up crashing whenever i start the Apps… Maybe any suggestion on that?