Why is my form cover not showing?

For some reason my form cover shows on the backend side but not on the preview or when I publish it live. Do you have any idea why the form cover isn't showing?

Could you share a screenshot to illustrate what is not showing up on preview mode? I just checked your form and it looks as it does in the edit mode:

Edit Mode:

Preview Mode:

In order to share a screenshot, you need to load the link of this thread in your browser: https://www.jotform.com/answers/1188355 

Then upload it: