Photos Do Not Display

Images uploaded via the Post Image field aren't added automatically to the post content. They are added to your Media Library and associated with the Post that is created. But jus like if you add an image to your Media Library or when editing a post, it doesn't automatically get added into your Post content, you have to add it yourself by inserting it.

To do this with Gravity Forms you use the Content Template feature of the Post Body field. Edit your Post Body field in Gravity Forms, activate the Content Template feature and configure the Content Template. You can use the Insert Form Field drop down to insert the value of form fields into your Post Body.

If you pick your image field from the Insert Form Field drop down, it will give you the additional option of picking the size and positioning. It will then insert the variable into your Content Template. Whatever is in the Content Template is what will be used to create the content of the post.

If a post has already been created, the content template isn't going to execute. The Content Template executes when the form is submitted and the post is created. It doesn't apply to existing posts.

Is there a reason? Because it's a form plugin, it process form data submitted via forms that you create. It doesn't process non-form data. So it doesn't manipulate existing posts. It's only for creating new data, it doesn't process or manipulate existing data. The forms create the posts, so the form has to be submitted in order for the post to be created.