1.15.2 Teleport player to Bungeecord server

I have an event listener on the PlayerJoin event and what I want to do is teleport the player to a server if some checks are good. So: the player connects to a lobby server, where a plugin does some checks on player join. If all checks are good than the player will be teleported to the main server, otherwise it will stay in the lobby server. What I've done is this, in the main plugin class I registerd the BungeeCord channel

Code (Java):

this.getServer().getMessenger().registerOutgoingPluginChannel(this, "BungeeCord");

In the event listener class, after all checks, I than do this

Code (Java):

private void teleportToVanilla(Player player) {
    ByteArrayDataOutput out = ByteStreams.newDataOutput();
    out.writeUTF("Connect");
    out.writeUTF("vanilla");
    player.sendPluginMessage(Main.getInstance(), "BungeeCord", out.toByteArray());
}
 

I'm sure the method gets called (already added some prints there) but the player doesn't get teleported.
This is the bungeecord configuration I'm using, but it seems like the server name is correct

Code (Text):

prevent_proxy_connections: false
listeners:
- query_port: 25577
  motd: '&1Another Bungee server'
  tab_list: GLOBAL_PING
  query_enabled: false
  proxy_protocol: false
  forced_hosts:
    pvp.md-5.net: pvp
  ping_passthrough: false
  priorities:
  - lobby
  - vanilla
  bind_local_address: true
  host: 0.0.0.0:25577
  max_players: 1
  tab_size: 60
  force_default_server: true
remote_ping_cache: -1
network_compression_threshold: 256
permissions:
  default:
  - bungeecord.command.server
  - bungeecord.command.list
  admin:
  - bungeecord.command.alert
  - bungeecord.command.end
  - bungeecord.command.ip
  - bungeecord.command.reload
log_pings: true
connection_throttle_limit: 3
server_connect_timeout: 5000
timeout: 30000
player_limit: -1
ip_forward: false
groups:
  md_5:
  - admin
remote_ping_timeout: 5000
connection_throttle: 4000
log_commands: false
stats: 057edd10-6825-40a4-b229-de441fde7111
online_mode: true
forge_support: false
disabled_commands:
- disabledcommandhere
servers:
  lobby:
    motd: '&1Just another BungeeCord - Forced Host'
    address: localhost:25565
    restricted: false
  vanilla:
    motd: '&1Vanilla'
    address: localhost:25566
    restricted: false
 

I'm new to Bungeecord so I might miss something, but I don't understand what could be?

 

Aaaah damn, didn't give attention to that part. I moved the logic in a task and called this when the checks are good

Code (Java):

Bukkit.getScheduler().scheduleSyncDelayedTask(Main.getInstance(), new Teleport(player), 1);
 

and it works, so even 1 tick of delay does the trick