Same here, although some thumbnails are showing up. We even have a featured image set for each post, but for most posts the thumbnails won’t show up.
We added an image via a cutoms field to some posts, but we can’t do this for all posts.
Is there a trick or a hidden setting where I can tell the plugin to use the first images of each post?
Here’s the link: https://www.einhochzeitsblog.com/hochzeitsmode-eheringe-brautschmuck-hochzeitsschmuck-brautschmuck/diamonds-are-was-ihr-schon-immer-ueber-diamanten-wissen-wolltet/
Thanks for your feedback!