I have made about 13 posts thus far, some with images and others with video. When I share a link on facebook I get a choice of only 8 thumbnails to represent my link even though there's 24 images in the gallery.
1. I've attached the particular image I want to my post, not inserted, just attached it to the post via the gallery.
2. I've inserted the image to the post.
Can I expand the choice of thumbnails or select my choice of thumbnails?
The blog I need help with is proactivespeech.wordpress.com.