only one background image – its ‘flashing

Hello.

I want to use this on several pages of my website.
I have three pages where I am using a background.
Home – single image – but it redirects ,
portfolio – works like a charm,
and contact – has only one image <- this is the problem page.

https://charissecardenas.com/contact

here are my settings
https://charissecardenas.com/settings.jpg

If I change select slide animation to Cross Fading and add a 2nd of the same image it resolves the issue.
However on the pages that do not have a background – the black background on my site goes away and its white.
So I cannot do that.

Can you tell me how to use a single image as a background and have it be static?

Is it possible?

thank you for such a great plugin

The page I need help with: [log in to see the link]