I am trying to fix a similar issue as Lizzy Leff. My modem was recently changed by our internet service provider and we lost our remote connection to
blue iris. Our internet service provider techs told us that the new platform they are running will not support static IP addresses. They said to use a dynamic dns service like no-ip.com. I went ahead with that and created a hostname and configured everything correctly. The problem I am having now seems to be with my router. I am using a Netgear router model WNDR4300. After going to port forwarding and attempting to set up a custom service for my WAN reflecting the new hostname and service from no-ip.com, I get a message that the port I am trying to use, port 81, is configured to something else despite the fact that I had deleted the old blue iris service thinking that by doing that I would free up port 81 for the new one. My external IP address and my no-ip hostname's address are identical so things look good on that end. When I use the canyouseeme.org open port finder tool, every port that I enter comes up as connection timed out and the same message comes up when using the blue iris remote connection wizard. Suggestions anyone, I am not a tech wizard and can use some help here.