my Name is Mark and i´m From Germany, so my english is not the best

so i have buy the App Droidmote, but it don´t work. I have Read the FAQ but everthing is Ready(the Cube have uniput, Busy Box is intalled).
The Cube and my Galaxy S3 is Connectet to the same Wlan(ip Adress is ident xxx.xxx.xxx.23+xxx.xxx.xxx.24
So, the Server is running, but the client(Galaxy S3) says "the Server is not reachable).Ok i hav read the RAQ and try the Mobile Hotspot funktion.
The Cube is the Hotpspot, then my Galaxy FIND NOW the Cube Droidmote Server, BUT the Client (Galaxy)syas WRON PASSWORD. Ichange it 20000000x but STILL PASSWORD WRONG.
What can i do???
thx