Failed to connect to server, but I didn't touch anything

TS3 Server 3.13.6 works 24/7
Today 07/25/2022 client users cannot connect to the server 3.13.6

25.07.2022 11:43:23		Info	TeamSpeak Client 3.5.6 (2020-11-25 13:53:42)	
25.07.2022 11:43:23		Info	SystemInformation: Windows Server 2016 (17763) x64 (AMD or Intel) Binary: 64bit	
25.07.2022 11:43:23		Info	Using hardware aes	
25.07.2022 11:43:23	Direct Sound	Debug	setting timer resolution to 1ms - 	
25.07.2022 11:43:23	SoundBckndIntf	Error	C:/Program Files/TeamSpeak 3 Client/soundbackends/directsound_win64.dll error: NO_DEFAULT_FOUND	
25.07.2022 11:43:23	SoundBckndIntf	Error	C:/Program Files/TeamSpeak 3 Client/soundbackends/directsound_win64.dll error: NO_DEFAULT_FOUND	
25.07.2022 11:43:23	Windows Audio Session	Error	GETTING_DEFAULTAUDIOENDPOINT: Элемент не найден. - 	
25.07.2022 11:43:23	SoundBckndIntf	Error	C:/Program Files/TeamSpeak 3 Client/soundbackends/windowsaudiosession_win64.dll error: GETTING_DEFAULTAUDIOENDPOINT	
25.07.2022 11:43:23	Windows Audio Session	Error	GETTING_DEFAULTAUDIOENDPOINT: Элемент не найден. - 	
25.07.2022 11:43:23	SoundBckndIntf	Error	C:/Program Files/TeamSpeak 3 Client/soundbackends/windowsaudiosession_win64.dll error: GETTING_DEFAULTAUDIOENDPOINT	
25.07.2022 11:43:23	SoundDevManager	Warning	Did not load any sound backends. No (usable) dynamic libraries found.	
25.07.2022 11:43:23	ClientUI	Info	OpenGL Info: LibGLES, Vendor: Google Inc., Renderer: ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0), Version: OpenGL ES 2.0 (ANGLE 2.1.0.57ea533f79a7)	
25.07.2022 11:43:23		Info	*** Time [ICONMANGER]: 107	
25.07.2022 11:43:23	Addons	Info	Checking for addon updates...	
25.07.2022 11:43:23	Plugins	Info	Loading plugin: gamepad_joystick_win64.dll	
25.07.2022 11:43:23	Gamepad Plugin	Info	Found client raw input wnd proc	
25.07.2022 11:43:23	Gamepad Plugin	Info	Cleared device list	
25.07.2022 11:43:23	Plugins	Info	Loading plugin: teamspeak_control_plugin_win64.dll	
25.07.2022 11:43:23	ControlPlugin	Info	Control Plugin started, accepting connections	
25.07.2022 11:43:23	Plugins	Info	Loading plugin: clientquery_plugin_win64.dll	
25.07.2022 11:43:23	Query	Info	listening on 127.0.0.1:25639	
25.07.2022 11:43:24	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList	
25.07.2022 11:43:24	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList	
25.07.2022 11:43:24		Info	*** Time [BUILD_GUI]: 288	
25.07.2022 11:43:24		Info	*** Time [SERVERVIEW]: 316	
25.07.2022 11:43:24		Info	*** Time [SERVERVIEWMANAGER]: 559	
25.07.2022 11:43:24	Addon	Info	Addon up to date.	
25.07.2022 11:43:24	Addon	Info	Addon up to date.	
25.07.2022 11:43:24	Addon	Info	Addon up to date.	
25.07.2022 11:43:24		Info	*** Time [MAINWINDOW]: 1447	
25.07.2022 11:43:24		Info	*** Time [INIT]: 1448	
25.07.2022 11:43:24	ClientUI	Info	Qt version: 5.12.3	
25.07.2022 11:43:24	ClientUI	Info	Using configuration location: C:\Users\Администратор\AppData\Roaming\TS3Client\settings.db	
25.07.2022 11:43:25	Bookmarks	Info	Collecting autoconnect bookmarks	
25.07.2022 11:43:25	ClientUI	Info	Last update check was: Пн июл 25 14:12:19 2022	
25.07.2022 11:43:25		Info	Statistics report: First run, report later in 1-30 days	
25.07.2022 11:43:25		Info	Statistics report: Setting next report date to: Пн авг 15 14:43:25 2022	
25.07.2022 11:43:25	Newsticker	Info	Newsticker next check: Вт июл 26 11:12:21 2022 GMT	
25.07.2022 11:43:45	ClientUI	Info	Connect to server: vitko-core.ru	
25.07.2022 11:43:45	ClientUI	Info	Trying to resolve vitko-core.ru	
25.07.2022 11:43:46	TSDNS	Info	SRV DNS resolve unsuccessful, "_ts3._udp.vitko-core.ru" DNS server returned answer with no data	
25.07.2022 11:43:46	TSDNS	Info	SRV DNS resolve unsuccessful, "_tsdns._tcp.vitko-core.ru" DNS server returned answer with no data	
25.07.2022 11:43:46	TSDNS	Info	A/AAAA DNS resolve successful, "vitko-core.ru" =(h: 62.221.80.33 p:0)	
25.07.2022 11:43:46	TSDNS	Info	A/AAAA DNS resolve for possible TSDNS successful, "vitko-core.ru" =(h: 62.221.80.33 p:0)	
25.07.2022 11:43:48	TSDNS	Info	TSDNS queried unsuccessfully 62.221.80.33:41144	
25.07.2022 11:43:48	TSDNS	Info	No TSDNS found	
25.07.2022 11:43:48	ClientUI	Info	Lookup finished: ip=62.221.80.33 port=9987 query=vitko-core.ru error=0	
25.07.2022 11:43:48	ClientUI	Info	Resolve successful: 62.221.80.33:9987	
25.07.2022 11:43:48	ClientUI	Info	Initiating connection: 62.221.80.33:9987	
25.07.2022 11:43:48	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList	
25.07.2022 11:43:48	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList	
25.07.2022 11:43:48	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList	
25.07.2022 11:43:48	Windows Audio Session	Devel	DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList	
25.07.2022 11:43:49	ClientUI	Info	Connect status: Connecting	
25.07.2022 11:43:54	ClientUI	Info	Connect status: Disconnected	
25.07.2022 11:43:54	ClientUI	Info	Failed to connect to server, want autoreconnect = 0	




at the moment I reinstalled the version to 3.13.7 and restarted the router

LAN mode is work, but not NAT

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