I also think that the quality of the articles should not be good or that the domain is possibly flagged.You need to wait. Nowadays Google taking too much time to index the links. If it still not indexed after using the GSA links and fetch as google, check the quality of the articles. Make sure the article posted was unique or not and make the changes. Share the articles on social media. It will help you.
Thanks to FB3003 for this suggestion.the only thing that i have success with is using social media shares. i use firefox and addtoany addon, to share a page across 10+ sites (social media + web 2.0)
Have you used ping services for your indexing? Or there are backlink indexing services for these, you should try them.