Images won't populate in Spirit

Hello -
I posted a question this morning during live forum but I think I was a little too late. I just finished a new website - LibertyGroupBenefits.org - I used the Spirit Theme. I was happy with the way everything turned out considering this was my first shot at it. I thought I would take a look a the responsive customization and realized a couple of things were out of order. Once I did that when I opened the site in my laptop browser and subsequently on several browsers and mobile, all of my header images and regional background images are gone. I ran Hummingbird and noticed it listed a jquery conflict in the header but I'm just not comfortable editing anything until I see if you can help me. I'm not even sure if what Hummingbird noted is relevant to my problem. I will set the admin on my site so you can take a look if you have a chance. Any help would be greatly appreciated as I was trying to get this up for a client today - hoping for tomorrow.
Thanks so much!
JO