У некоторых игроков проблемы с подключением

[oxygenium]

Проблема возникает не всегда, но очень часто.
ПК, на котором запущен сервер подключен к роутеру Huawei HG8245, через WiFi адаптер Xiaomi Mi Portable WiFi Adapter. Порты на роутере открыты. В брандмауэре все подключения разрешены.
Когда я включаю сервер, он виден абсолютно всем по моему внешнему IP. Но не все могут зайти. При попытке входа игрока, ему выдает сообщение: The server didn't respond.
В логах следующее:

SA-MP Dedicated Server
----------------------
v0.3.7-R2, (C)2005-2015 SA-MP Team

[16:05:16] filterscripts = ""  (string)
[16:05:16] 
[16:05:16] Server Plugins
[16:05:16] --------------
[16:05:16]  Loading plugin: pawncmd
[16:05:16] Pawn.CMD plugin v3.1.4 by urShadow loaded
[16:05:16]   Loaded.
[16:05:16]  Loading plugin: sscanf
[16:05:16] 

[16:05:16]  ===============================

[16:05:16]       sscanf plugin loaded.     

[16:05:16]          Version:  2.8.2        

[16:05:16]    (c) 2012 Alex "Y_Less" Cole  

[16:05:16]  ===============================

[16:05:16]   Loaded.
[16:05:16]  Loaded 2 plugins.

[16:05:16] 
[16:05:16] Filterscripts
[16:05:16] ---------------
[16:05:16]   Loaded 0 filterscripts.

[16:05:16] Number of vehicle models: 0
[16:05:43] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:44] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:45] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:46] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:47] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:48] [connection] 90.143.X.X:10964 requests connection cookie.
[16:05:49] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:50] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:51] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:52] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:53] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:54] [connection] 90.143.X.X:10965 requests connection cookie.
[16:05:55] [connection] 90.143.X.X:10966 requests connection cookie.
[16:05:56] [connection] 90.143.X.X:10966 requests connection cookie.
[16:05:57] [connection] 90.143.X.X:10966 requests connection cookie.
[16:05:58] [connection] 90.143.X.X:10966 requests connection cookie.

server.cfg

echo Executing Server Config...
lanmode 0
rcon_password 123123
maxplayers 50
port 7777
hostname In developement 
gamemode0 master
filterscripts
announce 1
chatlogging 0
weburl 
onfoot_rate 40
incar_rate 40
weapon_rate 40
stream_distance 300.0
stream_rate 1000
maxnpc 0
logtimeformat [%H:%M:%S]
language russian
plugins pawncmd sscanf
cookielogging 1
conncookies 1

Иногда у некоторых игроков получается зайти. Проблема возникает на разных провайдерах в разных странах. Есть какие нибудь мысли?