OwnerRez contains Auto-Cancellation Rules in the UI that can conflict with each other and cause inadvertent overrides of settings. There is a setting where you can apply auto-cancellation rules for "Checks" when a booking is waiting for a payment by check. Additionally, there is a separate setting for "Pending for Payment" where a different set of auto-cancellation options exist. However, any booking that is waiting for a check payment will inherently be placed in a "Pending for Payment" status as well. So that booking would match the criteria for both "Checks" and "Pending for Payment" at the same time. There is nothing in the UI that prevents a user from selecting conflicting options. For example, in the "Checks" section a user can select "The booking auto-cancels in 14 days". But in the "Pending for Payment" status, the user can simultaneously select "Send me a warning notification". These are conflicting options as one will auto-cancel and the other one will not auto-cancel but instead send a notification. In this instance, the "Pending for Payment" option takes precedence and will override the auto-cancellation selection in the "Checks" section.
Another example is if in the "Checks" section a user selects "The booking does not auto cancel". But in the "Pending for Payment" section, the user selects, "Automatically cancel the booking. Again, these are opposite and conflicting selections. It's unclear what would happen to a booking that is pending payment by check in this instance. Will the booking auto cancel or will it not auto cancel?
Ultimately, I don't see a need to have the "Pending for Payment" section at all as it appears redundant to the "Checks" and "Custom Instructions" sections, both of which will naturally place a booking in a "Pending for Payment" status while waiting for the payment. My suggestion would be to get rid of the "Pending for Payment" section altogether and simply add a third option to the "Checks" and "Custom Instructions" sections that allows users to receive a warning notification rather than auto-cancel.