I hope you are well today and thank you for your questions.
1. The site is WeAreMidlife.com and if you scroll to the bottom of our homepage the site just sort of ends. There’s no way to get to the second page. How can I remedy that?
Are there only 10 posts on your site therefore the pagination is not displaying?
2. If you click on a featured image it doesn’t take you to the corresponding blog post. What have I done wrong? I don’t see where I can edit these images.
I have just tested it on your shared site and it is working fine for me taking me to corresponding blog post.
You can set featured image on your site as described on this page http://freewptp.com/how-to-set-featured-image-or-post-thumbnail-in-wordpress/
3. When I click on our author pages it doesn’t include tidy links to the posts we’ve written, rather there are free floating featured images which, if you click, lead to nothing. http://wearemidlife.com/author/jessicagottlieb/
I have tested it on my test site and it’s working fine for me using latest version of Gillion theme.
Please try clearing WP Fastest Cache that you are using on your site or temporary disable it.