hi guys im desperate for some help,im setting up remote viewing on ivms4500,it used to work but iv had a change of router,iv port forwarded 80 8000 554 all ports are open, im using no-ip as my ddns server,all details for no-ip are same on phone and my nvr, im scratching my head iv spent hours and hours,some times i can view the cameras on phone at my house,then i just tried again and saying off line i dont know whats happening and i can never view them away from home,iv done all the hard work but must be some thing simple im missing,would appreciate if someone could help to sort this????