Hi @Elliot, I took a peek at the site, and it looks like there are some overflow issues, where the page is scrolling from left to right, leaving whitespace on the page.
This affects mobile views and can cause the issues you have described. I would first start checking for styles that cause elements that are causing overflow and change the styling for those.
One thing to check, are elements with fixed width pixels, that are extending beyond the body viewport. The Xray mode is good for this
I hope this helps!