NO thumbnails on main page

Hello support,

I have problem with my site after latest update. I have the site running for few month without any problem and any maintenance.
I’ve update the site few days ago and now there are no images on the main page but all is ok in the post page.

I’ve reseted the page, uninstalled, installed again made all changes according your tutorial but no luck, can you help me please?

Wrote on your support mail as well.

Thank you for your help