Hi Doris,
Thanks for reaching out with your Crio Pro WordPress theme questions
I inspected your site at the URL you sent in the forum and it looks like the background image on your home page was set inside of your BoldGrid Post and Page Builder page editor.
If you click “edit page” you can change the background image of a section by hovering over the section and using the “DropTab” to change the background for the upper section.
Using the “background” tab you’ll have control over background images, colors, animations and so on.
Something else to note, sometimes errors like this are the result of caching. What happens is, site elements are cached into the database for performance purposes, so after you make changes you always want to go back and clear all cache associated with your website after each update. This includes browser cache, server side cache, and plugin related cache.
One way you can verify that the changes have taken effect is to try pulling up your site in an incognito browser. The incognito or private browser will ignore most caches and generate the latest version of your website.
I hope this helps! Please reach back out to us if you have any other questions.