Your website is down:

Duplicate of https://github.com/zplug/installer/issues/8
Is it a duplicate if the issue is in another repo? I cannot possibly know about all the issues in different repos, right? :)
Btw, I didn't even try to use the installer (I use homebrew for that), but I was expecting the website to be there with more information. The website is prominently advertised in the short description of this repo.
Sure, I didn't expect that you know all issues in all zplug-related repos.
There is also #403 in this repo ;-)
Yes, I know. Sorry. But thanks to @22a, it has already reserved now. So I'll think about this matter with him