Cannot connect to League of Legends via SSTap/Netch/ShadowSocks App but Chrome, Facebook App can

[nickcarterney]

What version of shadowsocks-libev are you using?

The latest version: 3.3.5

What operating system are you using?

Ubuntu/Linux

What did you do?

Installing successfully on both client + server, I can use whatIsMyIp to check the current IP, and It shows my server IP on Chrome. But I see that League Of Legends cannot go through SSTap, ShadowSocks for Windows, or Netch. It said: NAT No UDP

What did you expect to see?

I can play League Of Legends through my ShadowSocks on SSTap or Netch

What did you see instead?

Netch said: NAT No UDP, but the connection on Chrome(Browsers, Facebook app on the mobile) still works well.
SSTap and ShadowSocks for Windows do not log anything and the statistic does not change when I only open League Of Legends, but the other apps: Skype, Teams, Chrome... still work well

What is your config in detail (with all sensitive info masked)?

{
"server":["103.139.xxx.xx"],
"mode":"tcp_and_udp",
"server_port": 11xxx,
"local_port": 1080,
"password":"my_password",
"timeout": 60,
"method":"aes-256-gcm",
"fast_open":true,
"manager_address": "/var/run/shadowsocks-manager.sock",
"nameserver": "8.8.8.8"
}