Images and Description of homepage (only) not working when sharing on social

My website: https://clamshellcommunications.com

I’ve uploaded a default image and as well as a default logo into RankMath. On each page of my website, I’ve specified a featured image, and I added the same image to the social tab in RankMath. These images are all the dimensions recommended by RankMath: 1200×630. I added my Facebook page, profile, and ID, and my Twitter handle, to RankMath. I also added a meta description to each page, using RankMath.

When I share a link to my homepage, I’m having trouble on Twitter and LinkedIn. (It works fine on Facebook, and the interior page images and meta descriptions show up fine.)

As you can see from the screenshots, on LinkedIn, no image shows.

On Twitter, no image shows, although the blue background is the background color for parts of my website. I don’t know where the words are coming from. I haven’t entered them anywhere on my website.

Why am I having a problem with the link to my homepage, and not my other pages?

Please help! I have an important event tomorrow and I need my site to be right!