Service skipped when vehicule available

Hi,
I have a list of 7 services and 5 vehicules (1 per day), find request below.
In the result the 2 first days are full so the 7th service won’t fit, but GH doesn’t assign it on an other vehicle, it just skip it.
I tried to change the objective to min-max activities but then I get 3 vehicules with only one stop.
Is there any way to obtain a more balanced result?
Thank you

The request in JSON:

{
   "vehicles":[
      {
         "vehicle_id":"shift_1",
         "type_id":"car",
         "earliest_start":1700470800,
         "latest_end":1700501400,
         "return_to_depot":false,
         "break":{
            "earliest":1700485200,
            "latest":1700488800,
            "duration":3600
         }
      },
      {
         "vehicle_id":"shift_2",
         "type_id":"car",
         "earliest_start":1700557200,
         "latest_end":1700587800,
         "return_to_depot":false,
         "break":{
            "earliest":1700571600,
            "latest":1700575200,
            "duration":3600
         }
      },
      {
         "vehicle_id":"shift_3",
         "type_id":"car",
         "earliest_start":1700643600,
         "latest_end":1700674200,
         "return_to_depot":false,
         "break":{
            "earliest":1700658000,
            "latest":1700661600,
            "duration":3600
         }
      },
      {
         "vehicle_id":"shift_4",
         "type_id":"car",
         "earliest_start":1700730000,
         "latest_end":1700760600,
         "return_to_depot":false,
         "break":{
            "earliest":1700744400,
            "latest":1700748000,
            "duration":3600
         }
      },
      {
         "vehicle_id":"shift_5",
         "type_id":"car",
         "earliest_start":1700816400,
         "latest_end":1700847000,
         "return_to_depot":false,
         "break":{
            "earliest":1700830800,
            "latest":1700834400,
            "duration":3600
         }
      }
   ],
   "vehicle_types":[
      {
         "type_id":"car",
         "profile":"car",
         "consider_traffic":true
      },
      {
         "type_id":"small_truck",
         "profile":"small_truck",
         "consider_traffic":true
      }
   ],
   "services":[
      {
         "id":"1",
         "name":"Harrison Insurance",
         "address":{
            "location_id":"104_13",
            "lon":-80.15222,
            "lat":26.61865,
            "name":"Harrison Insurance"
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"2",
         "name":"Mosley Inc.",
         "address":{
            "location_id":"104_10",
            "lon":-80.67593,
            "lat":28.07929,
            "name":"Mosley Inc."
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"3",
         "name":"Auld Media",
         "address":{
            "location_id":"104_12",
            "lon":-81.40738,
            "lat":28.29295,
            "name":"Auld Media"
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"4",
         "name":"Dory Software",
         "address":{
            "location_id":"104_11",
            "lon":-81.63387,
            "lat":29.64688,
            "name":"Dory Software"
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"5",
         "name":"Beckett Company",
         "address":{
            "location_id":"104_14",
            "lon":-82.67907,
            "lat":27.76765,
            "name":"Beckett Company"
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"6",
         "name":"McHugh \u0026 Co.",
         "address":{
            "location_id":"104_15",
            "lon":-84.26602,
            "lat":30.44202,
            "name":"McHugh \u0026 Co."
         },
         "duration":1800,
         "priority":3
      },
      {
         "id":"7",
         "name":"Ackerman Industries",
         "address":{
            "location_id":"104_16",
            "lon":-87.20814,
            "lat":30.44776,
            "name":"Ackerman Industries"
         },
         "duration":1800,
         "priority":3
      }
   ],
   "configuration":{
      "routing":{
         "calc_points":true,
         "consider_traffic":true,
         "network_data_provider":"tomtom",
         "return_snapped_waypoints":false
      }
   },
   "objectives":[
      {
         "type":"min",
         "value":"vehicles"
      },
      {
         "type":"min",
         "value":"completion_time"
      }
   ]
}