The install path for the installer is incorrect, and I think you’re also installing the zip file to the wrong folder manually. It’s likely you have multiple folders of wow installed.
1. Load the installer available here https://www.dugiguides.com/dgmembers/ and click on the settings button.
2. then click on the auto detect path button and click ok.
3. if that doesn’t work then you need to manually correct the path.
4. You can find the install path by loading your Battle net launcher and click on the Bnet icon on the top left corner
Select Settings
5. then cick Game Install/Update
6. You will find the install path under Folder Used for Gameplay
eg, so if your path is C:Program Files (x86)World of Warcraft_retail_
then the paths should be
Install Path: C:Program Files (x86)World of Warcraft_retail_
Launcher Path: C:Program Files (x86)World of WarcraftWorld of Warcraft Launcher.exe