Hello All,
The 650052 error code can be returned with message "The app needs access to a service ("https://ads.microsoft.com") that your organization "{organization}" has not subscribed to or enabled."
If you observe this error, please ensure that you have at least one of the admin users from your Azure AAD tenant added and enabled for work accounts in the Microsoft Advertising web application. Please contact support for further assistance.
Also, kindly refer to the Application behavior explained here for more insights: https://learn.microsoft.com/en-us/advertising/guides/authentication-oauth-register?view=bingads-13#application-behavior
I hope this will help resolving your issues.
Regards,
Manoj