@pronl
I emailed the address in your bio. Hopefully we can figure it out thank you!
Actually, it does show on the home page but only on the home page, not on any other page or posts. Even though my settings say to show on posts.
Update: I was able to make the featured images full size, but I had to deactivate Jetpack Photon and I went into my theme file and replaced all codes with ‘zinnias-post-thumbnail’ to ‘zinnias-post-full’.
New problem: Since I did that, I no longer have the option to add a featured image. That feature in my ‘Posts’ admin page is now completely gone and if I want an image to show I have to put it into the post itself.
So is there a better way of making the featured image full size without completely disabling it whatsoever? Thank you!