Hi. Our checkout page is all messed up and we can't seem to revert it to the theme page. How do we get the default checkout page back?

We used one of the travel pre-built demos but when we added woocommerce, the checkout page was just redirecting back to the homepage. We had to make a checkout page with elementor but it doesn't look good or work well.

Obviously we can't reinstall the whole demo as we've customised the rest of the site over the past year and definitely cannot afford to lose everything.