Hi, could you please add a link that demonstrates this problem, so we don’t have to look up these locations ourselves? Please always add a link that demonstrates your problem when posting in the forum 
However, I suspect from what you write that your route crosses from a european country into Russia? This is considered “crossing a continent” in Kurviger, you can read all about it in the documentation here:
https://docs.kurviger.de/web/faq/route_across_different_continents
and we had several discussions on the forum where you can also read more, like here: