Hi seppeg! Unfortunately the only way to subscribe to premium is a month at a time. A possible work around would be to purchase a gift card, but never having done so, I'm not certain if they have gift cards good for a whole year. Sorry for not having a better answer!
i already signed up for the annual subscription last December 2017 when Spotify offered it. now i cancelled my monthly since i was still signed up for it. I can not use the annual subscription now. Please help
I signed up for the annual already. so i don't need to sign up for again for the annual.