I've been trying to buy premium for a couple of days now, but it doesn't work.
But when logging in to Paypal and accepting the payment, i just get redirected to the same spotify page as before (https://www.spotify.com/de/purchase/panel/?country=DE#__main-billing-paypal). No error message is being shown.
The payment isn't listed in my Paypal accout either (and my Spotify account stays on Spotify free).
I already tried with different browsers, clearing my cache and even a different OS. I have not tested Spotify premium yet (thus the 99ct for 3 months should work - and why would it show me the offer if i couldn't use it?). Both my Spotify and Paypal accounts are set to Germany. The Spotify account is linked with facebook. And yes, my Paypal works, i just payed with it last week.