@Ron6456 Possibly because you agreed to the first 3 bookings getting a 20% discount. Or its just a mistake somewhere.
If its the former it should show uo when you look at your calendar and you can switch it off there
This just happened to me but they gave the renter a 20% discount for a month long rental. I am now losing money on the rental as I agreed to 20% off for longer rentals. A 40% discount all total! I feel really ripped off by this hidden discount.