Whitelisting callback urls on new platform

[KlingKong_P]

Hey,

so while attempting to implement the SignIn-Process for an App that I created I receive the error

“Callback URL not approved for this client application. Approved callback URLs can be adjusted in your application settings”

Before christmas break this seemed to work for me and I expect that my app exceeded some preliminary test-phase. I have set my Callback URL to “http://127.0.0.1” in the App details. I also expect that I need to whitelist this Callback URL somewhere else. I found many tutorials dated some months back, where people suggested to add Callback URLs to a Whitelist. This list could be found under the Settings section of the app. However, I cannot find this section on the new platform (developers.twitter.com) and there are only suggestions on how to find it on the old platform (apps.twitter.com). I am also unable to switch to the old version, as I am being automatically redirected to the new platform.

Although it says that I can do every adjustment on the new platform as well, I cannot find this Whitelist of callback urls. Can someone help me find it or suggest another solution to the mentioned problem?

Thank you in advance!