Extending Time of Reservation did NOT calculate $ properly

I am attempting to correct a booking $. Customer extended the time needed by two hours but receiving an error when I attempt to adjust

Hi Wendy, thank you for bringing this to our attention, and we’re sorry for any inconvenience this issue has caused. We understand how important it is to be able to adjust a booking smoothly, especially when a guest extends their time. We’ve followed up with you via email to gather a bit more information about the error you’re encountering so we can take a closer look and determine what’s happening. When you have a moment, please reply to that email and we’ll be happy to investigate further.