The problem was a misconfiguration in your server, which caused Kiolezo Template to not be installed. Kiolezo package is made by two extensions, its component and its template and it needs both to work properly.
So the reason was that Kiolezo Template was not installed in your site, but just the component was installed.
I have the same issue. When installing, everything succeeded except: "Template is not successfully downloaded. Please, install it manually."
I can import your other templates from URL inside of Kiolezo, but they still do not show up.
EDIT: I just found it on your site and install it manually. Everything is working fine now!!