I had an activated Windows 10 Home Single Language before this. Now, it's just Home. I updated through the Media Tool. I didn't find any option for the Single Language. So, I downloaded and installed the Home version. Could this be the problem?
I also recalled that I had an option for the Single Language in the first Windows 10 release. I really don't know why this time it's not present.
Anyway, I'm downloading the package now. It will take me 10-12 hours waiting time again for the download alone.