Sorry for my delayed response, but file sharing sites are prohibited where I work, so I couldn't see the logs.
First thing to note, if you're going to run the server on W10, I'd double the RAM. Unless you don't ever plan on having more than a couple of people on the server. In my personal experience, with 8GB RAM on a Linux dedi you could do 4 people easy. With Windows 10, you'll get 2 or 3 and then it will start to bog down if someone is on a minibike heading out to unexplored areas.
But that isn't related to your issue.
For your ports, you have 27000-27019. You should increase that to be 27000-27030 at a minimum, but they sometimes change the port ranges, so I personally run it up to 27055. (because they were using 27055 for something recently, but I cannot recall what it was. It's not on the list now though.)
For the server config, I recommend disabling RakNet as well as UNET.
Aside from that, I really am not seeing anything obvious here. If there is still an issue, have them ping your IP address and see if it gets through. You could have a firewall either on the modem, or the host PC blocking it.