Ensure that the flat rate is not including the resources as part of the rate:
  1. Go to Sales > Group Sales > Group Sales Settings on the left
  2. Click on the Flat Rate pricing tab
  3. Click on the rate scale that is being used on the reservation (to check which rate scale is used, go to the reservation from under Sales > Group Sales > Reservation Search and select the reservation, then look at the value for the "Rate scale")
  4. Go to the Included Resources tab
  5. Next to the type of resources that are being added, click Edit on the right
  6. Uncheck the box to include all resources OR ensure that the resource is not listed in the grid (to remove the resource from the grid highlight the row and press "Delete)
  7. Click Save