Suddenly only the first paragraph of content is diplayed on new posts

I used for around a year but suddenly the rss feed with Wpematico display only the first paragraph on new posts. The link of rss is on the description field . Can you test and let me know if works on you and display the full content ?
In same time i changed some settings of fast cgi and on database ini file but i dont know if the problem related to this settings or if they changed the content that the feed displaying . Thank you for your help !

The page I need help with: [log in to see the link]