Core Apps » ChatSecure:Android

Hey,

I´m running Chatsecure on a Nexus5 with Android 4.4.2.
The problem is, that I can´t connect with an added/newly created account to the corresponding server. I´m constantly getting a pop-message that say "Warning" and that´s it. So far i´ve changed none of the default settings except the priority. But i have tried it on a Samsung Galaxy Y with Android 2.3.x and it worked like a charm.

Thanks in advance for any advice you may have,
astronos