Hi and welcome to the Spotify Community!
I will make my best to help you out with the problem you experience.
Please try the following steps, and then get back to me with a result:
- Reinstall Spotify.
- Make sure you choose sign-in and not sign up, when you open Spotify.
- Try to sign in again.
- If the problem still persists, try to reset your password here: https://www.spotify.com/password-reset/
- Try the above steps again.
Does it work for you now?
Have a nice day! 🙂
If my post solved your issue, please accept it as a solution.