Mac MacOS Sequoia 15.5 Co-op LAN Multiplayer "Connection Failed" unsolvable issue

iksudo

Newcomer
I am trying to play with my girlfriend on LAN coop while on the same WiFi network, but we are getting "Connection Failed" issue all the time.

We are able to ping each other with no problem. I also tried using ZeroTier, and we can also ping each other using the IP Addresses from ZeroTier, but can't connect. We tried her hosting the server and me hosting the server, both ways.

Tried everything after carefully reading the multiplayer troubleshooting guide reinstalling the game, firewall setup is fine (also tried disabling it), restarting router, restarting our laptops, creating different farm settings, nothing helps.

System: MacOS Sequoia 15.5
Stardew Valley version: v1.6.15 build 24356
 
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