Thanks for your feedback.
Currently the login command sends requests to app.icenium.com in order to log you in. This should open a page in your default browser which requests credentials.
If you are using proxy maybe will be a good idea to whitelist this domain. You can investigate further what is causing this issue by using Fiddler
. You can track your request and check their status.
If you need any further assistance I will be glad to help.