Blogger thumbnails still not working


Here is my blog :

I’ve looked on Google how to fix this problem. And so, I’ve test the HTTP/HTTPS solution but doesn’t work (exemple with the article Le sommeil et l’âge :

I’ve also test the set Timeout solution. The function wasn’t present in the code so I’ve add it to test but it doesn’t work. And so I removed it.

What should I do ?