修改plugins\OauthMC\config.yml那里的login-mode

eg:

login-mode: "LinuxDo"

linuxdo-settings:
  client-id: "***"
  client-secret: "***"
  min-trust-level: 2
  require-active: true

authme:
  enabled: true
  force-linuxdo-binding: true
  disable-password-login: true

connect的回调地址填这个 http://ip:8080/callback （上述为你mc服务器的ip，保证安全组放行8080端口）