Help with Request failed with status code 403 on read-recently-played

[OtavioVenancio]

Plan

Premium

Country

Brazil

Device

Smartphone and Desktop

Operating System

(iOS 10, Android Oreo, Windows 10)

My Question or Issue

I created an application to gather the recently played songs between my colleagues in University but Im having trouble with the API request. Only my authorizations return properly, my friends keep getting 

Request failed with status code 403
User not registered in the Developer Dashboard

There is my app https://maistocadasufmg-bcsth.ondigitalocean.app/

[spotifyjosh]

Hi @OtavioVenancio. It sounds like your app is in development mode.

While your app is in development mode you can allow specific users to access your third-party app if you know their Spotify email address. Learn about how to do that here: https://developer.spotify.com/documentation/web-api/guides/development-extended-quota-modes/