Gepard License

[Marru]

How can I know what is the issue of my client. I'm a GM staff on a private server, and the owner gives me an extra gepard license for access dual login.
But when I open the 2nd Client there is an error of "GS 3.0 :: 2020112501" "You can't start more than 1 game window"
What should I do? 

Thanks in advance.

[sader1992]

you should talk to the server owner , and ask him to contact @Functor and ask him about the issue.

[Marru]

Everyone on my team uses it and it works, but for me its not.