Yes, I think your location is the problem, as until now I've experienced this problem only in Japan. When I lived in Japan I had a free account, but if you buy premium you might have unlimited hours, though I cannot guarantee that. Maybe someone else has experience with a premium account?
That's all I know unfortunately... 😕
Re: Spotify says I reached listening limit of 15 hours
Apparently, when you use your Spotify 'Free' plan in Japan it limits you to 15 hours of streaming per week. 😞 This seems to be a new thing because I used Spotify last year without any limits and also before I updated Spotify for my Mac... I'm only two days into my week and I've already used up my 15 hours of streaming. It SUCKS. The only good thing about this is that it's limited to Spotify on your laptop computer. Your phone app will let you listen without limit, with the usual ads of course. Hope this helps clear up anything.