Hello,
Thanks for your reply. I downloaded your theme from WordPress. After downloading I started to customize my page and made a child theme, using child theme configurator. I had some trouble with the child theme; some files where not downloaded correctly or were missing. I removed the plugin and redownloaded. When the child theme seemed to work properly, I started customizing the homepage. Because of the problems with the homepage and the slider, I changed themes, removed your theme and redownloaded it. However, I keep on having this problem. Could it be the child theme plugin that causes the problem?
Thank you for helping me. Have a good day!