403 Forbidden error when using Auth Flow PKCE

[aditya18m]

My Question or Issue

I am working with Auth Flow PKCE for the first time. I am trying to authenticate a user and just display their username and display name on successful authentication. I am able to authenticate my account (my client ID is in the app, I have a premium account). But for every other user I am getting a 403 forbidden error. I have tried both free and premium users.

Any ideas/solutions/insights into my problem?

[Ximzend · Accepted solution]

"""Newly-created apps begin in development mode. This mode is perfect for apps that are under construction and apps that have been built for accessing or managing data in a single Spotify account.

Up to 25 authenticated Spotify users can use an app that is in development mode — so you can share your app with beta testers, friends, or with fellow developers who are working on the app. Each Spotify user who installs your app will need to be added to your app's allowlist before they can use it."""

Source: https://developer.spotify.com/documentation/web-api/concepts/quota-modes

[aditya18m]

Thank you so much!