Sorry to hear you are having issues. Need more information.
1) Windows version. Please use Winver.exe for full version numbers.
2) Windowblind versions.
Windowblinds main function is to change Windows appearance. That include Windows Explorer. And to get a dark version of Explorer is by using dark theme Style . https://www.wincustomize.com/explore/windowblinds/search/dark+theme
Stardock Community Assistant.