Private draft app does not appear in 'marketplace apps' after installation in Sandbox environment?

I am working on an app extension to add Link action and JSON panel on Person Details view. The app is intended for private use and is in draft state. As I click:

Preview Install Now Allow and Install,

I am redirected to auth callback URL but the app does not appear in the “marketplace apps” list (one meant for listing installed apps). Hence no impact on Person Details view/UI.

Due to this I am unable to test the app. Can someone please help me?

Hi @fahadnadeem
Welcome to the community :wave: !

Was the authorization successful, and could you exchange the code for access and refresh token pairs? Ideally, that should mark it as a successful authorization and the app should be noticeable.

Can you also share the configuration that you have used for the draft app?