Divi Form Builder - Building a Post Creation Form

I don't know if this is supported by the tool, but when mapping the "Post Content" it doesn't save the images I insert in the text area with the Wysiwyg editor

Hi!
I've looked everywhere for documentation on how to remove or change the hover "tool tip" text of "no chosen file" ...at least after a file is uploaded.

And how to show a full preview of uploaded image (not just a cropped square).

Please let me know.
Thanks!