Comments problems

Hi,

I've uprgraded EB on two websites, Joomla 3.4.5 / EB 5.0.30.
On the two websites, comments on posts have disappeared, and there is no comment form visible on the posts.

I've checked all the thinks that have been said on this forum to solve these problems, but the problems are still there.

Could you help ?
One of the website is here :
http://www.afcodev.com/blog/dernier.html

Thanks a lot,
Catherine