I have gone into rates and changed weekdays to one price, and weekends to another and don't see it apply to the rate calendar. I also have the rate calendar telling me that the minimum booked nights is 3, when the rules have it at 2. The calendar also notes that both the rates and the nights are "custom", but I looked everywhere for where that may have been set up and find nothing.
Please write in to the Helpdesk with specific examples and screenshots, so we can investigate. There are many possible reasons for this, such as Spot Rates or using a dynamic pricing system.