As the title says, I can't play any Switch game online as they give me the exact same error code: 2618-0513 "Unable to connect to the other console(s). NAT traversal process has failed". The only game that works without any issues is Super Mario Bros. Wonder, oddly enough.
I already tried changing and opening ports, changing DNS, and checked what my NAT type is (it's B, so it should work from what I was told)
I am posting this here since none of the tutorials I have read have helped me so far and I am really desperate at this point. I was told that the Peer to Peer connections aren't working with my internet, but I can play Mario Kart Wii via Wiimmfi on a modded Wii perfectly fine, which also uses P2P.. I also can play games online on my PC and PS5, too.. So i'm puzzled And ai could really use your help.
Also, I already enabled DMZ to my switch, but that didn't solve my issue.
--Games that are working 100%--
Super Mario Bros. Wonder
Sky: Children of the Light (not a Nintendo game but I will mention it too)
--Games that don't work (that I tested)--"
Super Mario 3D World + Bowser's Fury (others can't join my room)
Super Smash Bros. Ultimate (Can't find players)
Mario Kart 8 Deluxe (Can't find players)
Super Mario Maker 2 (Can't find players to play coop. I can view, play and download levels just fine though)
Animal Crossing: New Horizons (can't travel to other people islands and they can't visit mine)
Splatoon 2 (can't find players)
If anyone had this same issue and solved it, please help! It would be much appreciated.
I already tried changing and opening ports, changing DNS, and checked what my NAT type is (it's B, so it should work from what I was told)
I am posting this here since none of the tutorials I have read have helped me so far and I am really desperate at this point. I was told that the Peer to Peer connections aren't working with my internet, but I can play Mario Kart Wii via Wiimmfi on a modded Wii perfectly fine, which also uses P2P.. I also can play games online on my PC and PS5, too.. So i'm puzzled And ai could really use your help.
Also, I already enabled DMZ to my switch, but that didn't solve my issue.
--Games that are working 100%--
Super Mario Bros. Wonder
Sky: Children of the Light (not a Nintendo game but I will mention it too)
--Games that don't work (that I tested)--"
Super Mario 3D World + Bowser's Fury (others can't join my room)
Super Smash Bros. Ultimate (Can't find players)
Mario Kart 8 Deluxe (Can't find players)
Super Mario Maker 2 (Can't find players to play coop. I can view, play and download levels just fine though)
Animal Crossing: New Horizons (can't travel to other people islands and they can't visit mine)
Splatoon 2 (can't find players)
If anyone had this same issue and solved it, please help! It would be much appreciated.