Trouble Establishing Connection

Problem: I can't get iSub to establish a connection outside of wifi. My first Mac Pro could connect without issue, but the new Mac Pro can connect but only via wifi. Once I switch my phone over to LTE it loses connection. I went through the standard troubleshooting steps but can't solve it. I've also tried mimicking everything on my old Mac Pro to conform to the new Mac Pro, both running 10.9.5. Running version 5.2.1
App: iSub
Subsonic: Premium
Subsonic Version: 5.2.1
Server Version: jetty-6.1.x, java 1.8.0_25, Mac OS X (72.1 MB / 131.5 MB)
Status: Successfully forwarding port 4040.
Log:
[6/5/15 4:38:07 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 5:40:14 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 6:42:22 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 7:44:30 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 8:46:37 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 9:48:45 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 10:00:44 AM PDT] INFO PlayQueueInputStream zavosh listening to "BBC Radio1 Breezeblock/Breezeblock Mix 16-03-2004.mp3"
[6/5/15 10:02:03 AM PDT] WARN RESTFilter Error in REST API: EofException
[6/5/15 10:02:03 AM PDT] ERROR JAXBWriter Failed to marshal JAXB
[6/5/15 10:02:03 AM PDT] ERROR RESTFilter Failed to write error response.
[6/5/15 10:50:54 AM PDT] INFO NetworkService Successfully forwarding port 4040.
Looks like the last 4 lines tell what the issue might be?
TIA
App: iSub
Subsonic: Premium
Subsonic Version: 5.2.1
Server Version: jetty-6.1.x, java 1.8.0_25, Mac OS X (72.1 MB / 131.5 MB)
Status: Successfully forwarding port 4040.
Log:
[6/5/15 4:38:07 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 5:40:14 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 6:42:22 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 7:44:30 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 8:46:37 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 9:48:45 AM PDT] INFO NetworkService Successfully forwarding port 4040.
[6/5/15 10:00:44 AM PDT] INFO PlayQueueInputStream zavosh listening to "BBC Radio1 Breezeblock/Breezeblock Mix 16-03-2004.mp3"
[6/5/15 10:02:03 AM PDT] WARN RESTFilter Error in REST API: EofException
[6/5/15 10:02:03 AM PDT] ERROR JAXBWriter Failed to marshal JAXB
[6/5/15 10:02:03 AM PDT] ERROR RESTFilter Failed to write error response.
[6/5/15 10:50:54 AM PDT] INFO NetworkService Successfully forwarding port 4040.
Looks like the last 4 lines tell what the issue might be?
TIA