One Android Client Can Connect, Another Cannot

[rickmp001]

Hello,

I am running Subsonic Server 5.1 (build 4310) – January 18, 2015 (w/Subsonic Premium License) on a MacPro 1,1 running MacOS 10.6.8. The server version is "jetty-6.1.x, java 1.6.0_65, Mac OS X (78.0 MB / 147.9 MB)" The problem I am having concerns Android clients connecting to the machine running Subsonic Server. On a Samsung SCH-R720 phone running Android 2.3.4, I am running the Subsonic client version 3.8. This device connects to the Subsonic server every time, without issue. On a different device, a Digiin HS-10DTB12 tablet running Android version 4.2.2, I am running the Subsonic client version 4.4 and UltraSonic version 1.3.0.8. Both clients on the tablet have the same server/username settings entered exactly as they are on the Samsung phone that can connect, yet neither client on the tablet can connect to the Subsonic server - in each instance, the client attempts to login 4 separate times before bombing. Has anyone encountered this scenario? Can anyone possibly point me in the right direction to getting the tablet to successfully connect to the Subsonic Server?

Thank you.