Tak jsem udělal ticket na WG a odpověď je zde:I'm sorry to hear that you can't log-in to the test server. Please make sure that you have added the game .exe files to the exceptions of both your firewall and anti-virus software as well as that you are typing the correct email and password.
Additionally, a new installation of the test client could also resolve your issue. However, please be aware that we do not support the test servers of the game (only the live ones). Nonetheless, you can try asking in our forum to see if anyone has had a similar problem and if they have found a solution. I hope that this clarifies the situation.
Have fun on the battlefield!
To mi opravdu moc pomohli.