Spotify Premium Problems

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Recently I have bought a Spotify Gift Card for 1 month and used it to redownload my music back. When I tested it out, I realized that I could not use the Shuffle button. When I tried to listen to a album, it suggests songs from the artist. How can I fix this? If I try to press the shuffle button from the menu, it says "You discovered a Premium feature!" Even though I had premium.  It also adds a limit to skipping songs and my profile says that it's Premium. It only lets me download music to offline and that's it. When I redownload the Spotify app on the iPhone, it sets all my music to not downloaded. Any help?