TomatoUSB

Hi, Everyone 
        I installed "tomato-K26USB-1.28.RT-MIPSR2-105-AIO" to RT-N16 and everything work great, thank Shibby. Except one thing, I try to use build-in transmission in firmware and it always shown " could not connect to tracker". how to solve it? I'm lack of linux knowledges and just started to learn because of this thing. I try to set forward port form my modem to port 51515. It's still no work yet. Could you explain step by step in config transmission.

Thx in advance.