The server uses Interlude client. You can download the game here.

Patch updated to version v.1 from 02.05.2023 (00:30).

Patch:
Download patch (Website)
Download (Mega.nz)  Download (Anonfiles)  Download (MediaFire)  Download (mega.nz)

Patch for clans:
Download patch (Website)

Before updating the files is strongly suggested to disable antivirus or add the system folder to antivirus exclusions, antivirus protection will not be able to open files and may take it as a virus.
And you can not rename the system folder if you renamed it the patch will not work correctly.
The files in the system folder: interface.u, interface.xdat can not be changed, otherwise you will have a kick from the server.