You may experience such problems when you set the monitor to a screen resolution it does not support. The resolution you can use depends on the resolutions supported by your monitor. The Display Resolution in Control Panel shows the recommended resolution for your monitor. Please check your settings and right click on the file named config.ini in C:\Program Files (x86)\IDCGames\Zula\Game and open it with Notepad.
sections according to your desktop resolution and save the file. After closing the file, open the game launcher and try to login again. If your problem is not resolved, we recommend that you remove the game completely from your computer and perform a clean installation again, manually deleting the IDCGames folder in the C: directory.