Booking requests arrive in your PMS with no credit card captured, and guests can submit a reservation request without entering any payment information.
Why this happens. The payment collection setting for booking requests did not persist correctly for your connection. The setting appeared to be on, but the underlying record never saved it, so the checkout skipped the card entry step entirely. Guests had no way to enter a card, and requests arrived with nothing on file.
What to do. The setting has been corrected and saved for your connection. Your website needs to pull in the updated configuration on its next sync. You can trigger a manual sync to speed this up, or the site updates automatically on schedule.
Once the site reflects the change, guests are asked to provide a card when submitting any booking request. No charge is made until you accept the reservation.