Speakers List displays all featured images on frontpage

I followed the documentation's instruction. But the Speakers list is showing many pictures on the frontpage.
Please, advise.

Hello,
Could you please provide me with a URL to your website, either here or via PM (click the “Private Message” text underneath my avatar) so that I may analyze it?

Hi,

On your frontpage "Le coloque" section there's [Agenda ..] shortcode which displays speakers, so please remove it and your speakers should disappear.
Could you also send me your website backend access? Then I'll be able to check the issue exactly.

Thank you for the advice. I tried what you said but there is no change. I rolled back the Speakers page of the demo, but no result. Please can you do it for me?
Best,
Dany

Try to remove all of your posts and pages and import xml file with demo content (default page structure) again.