If you are in the developer tier for the Ads API:
The Developer license provides companies access to all Ads API endpoints to develop their tool to completion. Developer-level partners are limited to five OAuth tokens and are prohibited from exposing any Ads API functionality to external advertisers.
Access grows as you review your application status with our team and progress through the different tiers.
I’m personally not able to manage access but will check back with the team on this alternative app ID. Please confirm that you no longer require access to the Ads API and that access should be removed if it has been enabled for your app.