client not sending to server

I have installed traccar server on debian and installed client on android phone. I have changed the ip to match that of my public ip and enabled dmz on router to server ip address.

I start the client on the phone on the default port 5055 but see no incoming requests to the server? I have also tried disabling all firewalls/filtering but to no avail.

 tail -f ../logs/tracker-server.log
2017-01-07 19:48:02  INFO: Java runtime name: Java HotSpot(TM) 64-Bit Server VM vendor: Oracle Corporation version: 25.111-b14
2017-01-07 19:48:02  INFO: Memory limit heap: 3548mb non-heap: 0mb
2017-01-07 19:48:02  INFO: Character encoding: UTF-8 charset: UTF-8
2017-01-07 19:48:02  INFO: Version: 3.9-SNAPSHOT
2017-01-07 20:21:59  INFO: Operating system name: Linux version: 3.2.0-4-amd64 architecture: amd64
2017-01-07 20:21:59  INFO: Java runtime name: Java HotSpot(TM) 64-Bit Server VM vendor: Oracle Corporation version: 25.111-b14
2017-01-07 20:21:59  INFO: Memory limit heap: 3548mb non-heap: 0mb
2017-01-07 20:21:59  INFO: Character encoding: UTF-8 charset: UTF-8
2017-01-07 20:21:59  INFO: Version: 3.9-SNAPSHOT
2017-01-07 20:22:04  INFO: Starting server...

When I do a port check from your website to port 5055 server log shows

2017-01-07 21:10:05 INFO: [83C18709] connected
2017-01-07 21:10:05 INFO: [83C18709] disconnected

all sorted now client device had not obtained location

check if the port is open
http://www.yougetsignal.com/tools/open-ports/

else open the port.

Even if there is error again then enable the GPS Location option in your mobile or check the status in android app if the "location update" functions.