@Hamza118 you must have a discount set somewhere. Go carefully through all your price settings editing as you go as this opens up new windows where a discount might be set.
@Hamza118 go to hosting dashboard/menu, /listing/pricing and availability/discounts.... add a discount for other stays
here you can set custom discounts, for example for stays longer than 14 nights. Some hosts have reported some fantom discounts they didn't set by themselves. This platform has its glitches ...