Fix Tour Pricing Calculation

My WordPress site runs the Traveller theme and every multi-day tour on the platform shows an incorrect total; the system simply miscalculates no matter which dates or guest numbers a visitor selects. Because the error appears on all tours, I suspect the root lies in the theme’s tour-type pricing logic or one of its companion plugins.

What I need now is a clean, permanent fix that makes every price calculation reliable again—from single-guest bookings through to larger group enquiries—without disturbing any other site functionality.

If you’ve fixed pricing math in WordPress travel systems before—especially with the Traveller theme or similar booking engines—I’d love to get this sorted quickly.