The control is getting stuck in this line "restClient.Authorize(RINGCENTRAL_USERNAME, RINGCENTRAL_EXTENSION, RINGCENTRAL_PASSWORD).Wait()". We have provided all the valid inputs but still the control is not moving to next line.
Getting stuck at Authorize method.
The code you are showing is for password flow authentication and it works with "Server-only (No UI)" app type. Since your app type is "Server/Web" which require authorization flow authentication. If you really need your app is a "Server/Web" app, then follow the instructions from this developer guide to implement your app. If the app type supposed to be "Server-only", then either you create a new app with the correct app type. Or let me know your current app client id so I can change it for you.
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