Login failed in Android App

Hi guys, I´m new to the project. I can normally login using the browser. But login through the Android App fails with "Error logging you in, check server url, email, password". Although i can then see the device in Authorized devices. One for everytime i press login. I tried with the IP+Port, IP+Port/api kekuna.mydomain.com kekuna.mydomain.com/api
Any idea what might be the problem?