I am currently running 2 websites on Search Engine Ranker and for those projects I got more than 700 links verified but not a single backlink indexed as I see on alexa traffic page. I am using same indexing softwares as with previous project, but for previous project I was running the website but also web 2.0 who is pointing to the main website, and for the website it showed about 900 links verified but for the web 2.0 about 120 and that's about the same number showed on alexa traffic page as indexed backlinks for the website. So my conclusion is that the best way to index backlinks is to have lots of links pointing to your web 2.0's that lead to your site, and to index those links.
Is this conclusion correct for why my 2 websites aren't indexing no more?
And does link wheel still work today, for example the more tiers the better ?