Your PMS has a same-day booking lead time set, but your website still accepts same-day bookings.
Why this happens. The lead-time value from your PMS does sync to your site, but the site does not act on it unless advance-notice enforcement is switched on. That switch is off by default. On most sites, the lead-time value is present but inactive, and same-day bookings stay open right up to check-in.
If you do not want a cutoff. You usually have nothing to change. The synced value is not blocking anything.
If you want the cutoff enforced. Turn it on in your HomeRunner property settings with Validate advance booking hour, rather than changing anything in your PMS.
Before you change the PMS setting. The lead-time field in your PMS often governs last-minute bookings on other channels such as Airbnb and Vrbo. Changing it to zero opens last-minute bookings everywhere that field applies, not only on your direct booking site. If your goal is only to change direct-booking behavior, the HomeRunner setting is the safer place to do it.