Hello Mike, I found the answer…. What happens is that guests can request an extension at whatever rate they want and you have the choice of rejecting it or accepting it. You have to message the guest to negóciate the price but otherwise if you blindly accept the extension, you will also accept the rates they propose without you knowingly. It is not a bug. Say if your rates are $81 for 3 nights, then you can request to extend it at a lower rate say $70. Personally, I think , there should be an extension rate feature, that allows you to set the rate of discounts in percentages, 10,15 or 20% but not leave it entirely at the guest’s devices to decide. I think guests can abuse this feature, they know they plan to stay in a location for x number of nights but then the savvy guest books the minimum then requests an extension at the rate they desire. If the host is not careful, the host could be granting a discount the host did not expect or was not aware of.