It happened to me a very bizarre bug and now I don't know what to do. Aside from being stressed.
To participate in the Russia event, I change my Home Location, chose and typed in the city Vladivostok,Russia. I saw that it was correct and matched on the map. I put accept and after updating it said it was in China. And now I can't change it.
This happened by bug and I really want to participate in the Russia Challenge and asking if they can reset the home location or change them.