// 这是服务器的 snell 状态
● snell.service - Snell Proxy Service (Main)
     Loaded: loaded (/etc/systemd/system/snell.service; enabled; preset: enabled)
     Active: active (running) since Sun 2025-08-03 14:54:16 UTC; 23min ago
   Main PID: 81453 (snell-server)
      Tasks: 2 (limit: 485)
     Memory: 6.8M
        CPU: 323ms
     CGroup: /system.slice/snell.service
             └─81453 /usr/local/bin/snell-server -c /etc/snell/users/snell-main.conf

Aug 03 14:54:16 X systemd[1]: Started snell.service - Snell Proxy Service (Main).
Aug 03 14:54:16 X snell-server[81453]: 2025-08-03 14:54:16.758310 [server_main] <NOTIFY> snell-server v4.1.1 (Sep 24 2024 13:16:40)
Aug 03 14:54:16 X snell-server[81453]: 2025-08-03 14:54:16.759304 [server_main] <NOTIFY> Effective IPv4 DNS: x.x.x.x
Aug 03 14:54:16 X snell-server[81453]: 2025-08-03 14:54:16.759451 [server_main] <NOTIFY> Effective IPv6 DNS: x:x:x:x::x
Aug 03 14:54:16 X snell-server[81453]: 2025-08-03 14:54:16.759542 [server_main] <NOTIFY> Start snell server on 0.0.0.0:12345
Aug 03 14:54:16 X snell-server[81453]: 2025-08-03 14:54:16.759784 [server_main] <NOTIFY> TCP Fast Open enabled

Surge 这边的配置如下：

SnellProxy = snell, x.x.x.x, 12345, psk=xxxxxxxx, version=4, reuse=true, tfo=true

然后 Surge 一直无法使用该代理（已确认代理服务可以 ping 通），请问我应该如何排查这个问题呢？

使用的是 https://github.com/jinqians/snell.sh/tree/main?tab=readme-ov-file 一键部署 Snell v4.