Webnauts~
I only see four pages of your site in the SI:
https://www.webnauts.net/certificate.html I'm not sure what purpose this page plays in your site but with it's lack of content/focus and no outbound links (orphaned page) I'm really not surprised that it was relegated to the SI.
https://www.webnauts.net/check.html is exactly the same as
http://www.webnauts.net/check.html and seems properly placed in the SI due to Google's duplicate content filter.
www.webnauts.net/test.html Did this appear in the SI after you implemented the 301 redirect? 301 means the page has "moved permanently". This page didn't move to your homepage and should be returning the 410 response "Gone".
The fourth is a pdf in a language foreign to me :)
William.