Hey @Cajannelms, welcome to the Spotify Community!
When you started Premium, you should have received a confirmation email from Spotify which includes a username. Could you double-check that you're logging in with that exact username? (A 10-digit username signifies that you should log in with Facebook.)
Looking forward to your response 🙂
Hey there you, Yeah, you! 😁 Welcome - we're glad you joined the Spotify Community! While you here, let's have a fun game…