I wish I could figure out how to register the node I am running on my spare Windows desktop. I have port 8333 forwarding to the Qt wallet and it shows as being reachable on Bitnodes' site.
It's certainly
not user-friendly to get your node verified. I have no idea how you would do it on Windows, but maybe you can use a linux device from the same IP?
Thanks for the link, I wish you could just register automatically from their webpage when you "Check Node".
That's not secure enough, you need to be able to do an api call from the ip address that the node is run from. I was in your shoes months ago, but
two pages back you'll see that instructions were provided to me that are easy to follow for folk like me that don't use Linux (yet) or program or anything. I successfully registered my node on a windows machine and haven't had issues since. I don't leave
my webserver (see link for how to set one up on your machine) running all the time for security reasons, but I redo the api call weekly to keep the btc address registered with my node. Install Cygwin and curl support to enter the command line stuff.
You have a static ip address, right? If not then you cannot register your node.