Login goes in loops outside US – T-Mobile DIGITS Review

Installed on a new phone. After login, welcome screen is displayed. After accepting the terms same login screen displayed again. This goes on forever! Confirmed the log in credentials were valid. There is no error message displayed either. Made the app unusable with this! Worked OK on previous phone. Update: Connected via VPN to US. That worked and I was able to login. Developer needs to handle exceptions in such failure and warn the user that initial login is not permitted outside USA. Or allow the user to login from outside of USA.
Review by Lmlnet on T-Mobile DIGITS.