t-mo modem questions

when i look at my cameras on my phone with the tinycam app it gives me the ip address the system uses. my netgear says 192.168.0.1  but has a different address in the app that is like the one i posted above. the t-mo says 192.168.12.1  but on the phone camera app it is the one i sent. but now it is different as i turned off the t-mo to clear it form my phone to get my cameras to work again they got hung up on that t-mo address. and when i turned the t-mo back in the cameras still worked but that address was different.  plus the t-mo app is not working is it stuck on the same page as on your iphone. so tomorrow i will stop in to t-mo store and have them see if they can figure it out plus i have nate your tubes saved and will see if i can do a back door before i return it. i may be able to set the port up or doe some port forwarding so my cameras will get thru it. thanks