What happened: You most likely logged into an additional account you didn’t know you have. Don’t worry; unless you’ve applied a payment method to it at some point, this account is not costing you anything.
What to do: To get to the account you’re used to, log out of the “empty” account and log in again but, this time, use just your Spotify username, not your email address.
Let us know if that helps, thanks! ^^
Breaking up posts like this makes it exceptionally easier for everyone to follow what's happened. This is helpful for not only the original poster, as well as anyone else that Googles this issue in the future.
Great stuff Nico! You've got a month of Premium on the way. And we'll see you in just under 10 weeks in Stockholm!