大佬们，单点登录功是怎么配置的？

我的代码：
EMOptions *options = [EMOptions optionsWithAppkey:@"1185180731177268#zhinengxiaofangshuan"];
    options.apnsCertName = @"DevCer";
    
    [[EMClient sharedClient] initializeSDKWithOptions:options];
    
    EMError *registerError = [[EMClient sharedClient] registerWithUsername:@"8001" password:@"111111"];
    if (registerError==nil) {
        NSLog(@"注册成功");
    }
    EMError * loginError = [[EMClient sharedClient] loginWithUsername:@"8001" password:@"111111"];
    if (!loginError) {
        NSLog(@"登录成功");
    }
    EMError *error = [[EMClient sharedClient] loginWithUsername:@"8001" password:@"111111"];
    if (!error)
    {
        [[EMClient sharedClient].options setIsAutoLogin:YES];
    }
账号被挤下来的代理方法是userAccountDidRemoveFromServer，可是我两个手机登录同一个账号，都没执行userAccountDidRemoveFromServer方法，大佬们知道怎么设置吗？