changed themes however my old theme shows up when I search my site

So I’m pretty new to this . I started my site with one them then decided I didn’t like it, so I changed to a new theme. I made a child theme and everything looks good when I view my site from my dashboard. The problem I’m having is while I was at my mom’s house I tried to show her my site and when I put in the url my old them came up with the site half finished. When we used our phones instead of the pc my new theme and finished site came up. Can someone help. My old theme was storefront and my new theme is klean.