Sorry you're having trouble; let's see what we can do to make sure you get your premium.
Could you try using a different device or browser for me please? If you have a computer or tablet, try going through the same steps there, and on a different browser like Chrome or Safari, depending on what you used before.
Let me know how that goes, and I can suggest some other tips if that doesn't work!
If I helped you, likes please! If I answered you, Accept as Solution!! What's a Spotify Rock Star, and how do I become one?