Hey! Welcome to the community 🙂 There was some server issues earlier which are still ongoing which are effecting both premium and unlimited account upgrades, the main topic about it is here (where the staff are posting updates).
I would suggest you have a read at and try the steps outlined in this post once it is fixed! Peter
PeterSpotify Community Mentor and TroubleshooterSpotify Last.FM Twitter LinkedIn Meet Peter Rock Star Jam 2014
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