Hey Rohinito, sorry to hear that you are and your friend are experiencing this issue when trying to duel. Could you let me know if your NAT is Open, Strict, or Closed? Have you also already tried working through our connectivity troubleshooting steps? I'd recommend you ask your friend to do the same.
We bouth have Green NAT and Open
we was able to play 1 vs 1 but only if we are lucky in matchmaking, we just cant get in to group whole time we get info try again later
i have ethernet directyl from main router via cabel no wifi
Our ethernet deliver dont give us access to router configuration and i cant turn off Upnp and set port forwarding maybe this is issue but some how we play 1vs 1