Can't login on myTeamSpeak account with TS3

[GTS2PL]

Hello,
I have a problem with my account , when I try to login with TS3 to myTeamSpeak (to get IDs etc.) ist not posible "login failed, please try again later" (writing it from my keyboard). But to myteamspeak.com from web browser (writing it from my keyboard) its no problem so what is the problem with the TS3 app ?
I did turn off the antivirus system but it did not help :/
Reinstallation did not help to (3.1.8) ...
I have all ID and bookmarks on my mobile TS3 app and the are sync to myTeamSpeak and I want them on my PC also.

Any ideas how to fix it ?

[mis20007]

Hello,
I have a problem with my account , when I try to login with TS3 to myTeamSpeak (to get IDs etc.) ist not posible "login failed, please try again later" (writing it from my keyboard). But to myteamspeak.com from web browser (writing it from my keyboard) its no problem so what is the problem with the TS3 app ?
I did turn off the antivirus system but it did not help :/
Reinstallation did not help to (3.1.8) ...
I have all ID and bookmarks on my mobile TS3 app and the are sync to myTeamSpeak and I want them on my PC also.

Any ideas how to fix it ?

I have the same code here and throws errors:

25.02.2018 16:51:05 Info TeamSpeak 3 Client 3.1.8 (2018-01-22 09:50:07) 
25.02.2018 16:51:05 Info SystemInformation: Windows 10 (16299) x64 (AMD or Intel) Binary: 64bit 
25.02.2018 16:51:05 Direct Sound Debug setting timer resolution to 1ms - 
25.02.2018 16:51:06 ClientUI Info OpenGL Info: LibGLES, Vendor: Google Inc., Renderer: ANGLE (ATI Radeon HD 4300/4500 Series Direct3D11 vs_4_1 ps_4_1), Version: OpenGL ES 2.0 (ANGLE 2.1.99f075dade7c) 
25.02.2018 16:51:06 Addons Devel Installation request for Control 
25.02.2018 16:51:06 Addons Info Checking for addon updates... 
25.02.2018 16:51:06 ProtobufRPC Warning Error contacting URL https://clientapi.myteamspeak.com/addon: SSL_ERROR: Alert on protocol: TLS 1.2 level: fatal error: unsupported_certificate (43) 
25.02.2018 16:51:07 Info *** Time [MAINWINDOW_ACTIONS]: 663 
25.02.2018 16:51:07 Windows Audio Session Devel DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList 
25.02.2018 16:51:07 Windows Audio Session Devel DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList 
25.02.2018 16:51:07 Info *** Time [SERVERVIEW_ACTIONS]: 647 
25.02.2018 16:51:07 Info *** Time [SERVERVIEW]: 683 
25.02.2018 16:51:07 Info *** Time [SERVERVIEWMANAGER]: 849 
25.02.2018 16:51:08 Info *** Time [MAINWINDOW]: 2331 
25.02.2018 16:51:08 Info *** Time [INIT]: 2333 
25.02.2018 16:51:08 ClientUI Devel Notifications init: Soundpack path: D:/ts3/sound\default 
25.02.2018 16:51:08 ClientUI Info Qt version: 5.6.2 
25.02.2018 16:51:08 ClientUI Info Using configuration location: C:\Users\misio\AppData\Roaming\TS3Client\settings.db 
25.02.2018 16:51:08 ClientUI Info Last update check was: niedz. lut 25 11:43:55 2018 
25.02.2018 16:51:08 Info Statistics report: Not yet, next report on czw. mar 1 11:58:10 2018 
25.02.2018 16:51:08 Bookmarks Info Collecting autoconnect bookmarks 
25.02.2018 16:51:09 Newsticker Info Newsticker next check: niedz. lut 25 18:17:44 2018 
25.02.2018 16:51:26 ProtobufRPC Warning Error contacting URL https://clientapi.myteamspeak.com/authentication: SSL_ERROR: Alert on protocol: TLS 1.2 level: fatal error: unsupported_certificate (43) 
25.02.2018 16:51:26 ClientUI Warning Account login failed, server currently not available. Retry in few minutes.

[GTS2PL]

I did make a ticked with this issue and for me the problem is my AntiVirus Kaspersky.
Problem is that it is scanning protected/secured connection and TS serwers have a security protocol that is checking if the is a third person (hacker or a spy program/trojan) not lisening and stealing the data (login and pasword) if the is the serwer refuses to login.
To fix it You need to add in AntiVirus program a rule to not check TS3 Client protected/secured connection.
To check if it is the AntiVirus kill all it processes in task manager.
I hope it will help You if not make a ticket to support.