Hello There,
Thanks for writing in! You need to edit your slider and make sure that the title layer is a link. At the moment, it is just a plain title heading text and this is why it doesn’t link to the posts. To properly setup post based sliders, please check this out: https://www.themepunch.com/revslider-doc/post-based-slider/
When you edit you slide, please click on the text layer and go to Action.

We would loved to know if this has work for you. Thank you.