I installed a brand new ASUS rt-ac68u router to replace an older ASUS router last week and then I went to Las Vegas. While in Vegas, I discovered that my security cameras are no longer visible from my smart phone. I checked my computer when I got home and I do see the cameras from my computer but not from anybody’s smart phone who was connected before. I think it might be a port forwarding problem because nothing has changed my Security System DVR. So my question is do I change something on the router or do I have to go to the server? I’ve had this system for many years and I’ve forgotten how to set this up plus I’m not sure if there is still free support anymore because its obsolete now.