403 error on GET v1/me/top/tracks

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I have been working on an App using Kotlin which uses spotify API and to fetch user spotify account data and to play some music using the spotify App Remote.

Now as I proceeded with the app it is working all fine in my device but when I give the App to someone else or someone else tries to open it they cant fetch the  v1/me/top/tracks and the top artists data and they are getting an error saying :-

Bad OAuth request(wrong consumer key , bad nonce , expired timestamp...). Unfortunately, re-authenticating the user won't help here 

Response {

protocol=h2,code=403,message=,url=https://api/spotify.com/v1/me/top/tracks

And I have getting the same issue for the top artists too. Also Note that it is working fine when I am using it on my android device or on my emulator but it isn't working fine when someone else is trying to run the App.

[Ximzend · Accepted solution]

"Newly-created apps begin in development mode. […] 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. Allow another user to use your development mode app by following these steps: [see linked page]" - https://developer.spotify.com/documentation/web-api/concepts/quota-modes

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Thanks it works now and also sorry for the late reply... I just got way too busy with my week and couldn't reply at that time