Invalid JWT response with VBA code for FedEx Ship API - What am I missing?

Question

Trying to utilize fedex ship api using vba but I keep getting a response of "The given JWT is invalid. Please modify your request and try again."

Here is my json payload

{
  "labelResponseOptions": "URL_ONLY",
  "requestedShipment": {
    "shipper": {
      "contact": {
        "personName": "Nick",
        "phoneNumber": 3155555555,
        "companyName": "company"
      },
      "address": {
        "streetLines": [
          "34 road dr"
        ],
        "city": "saint charles",
        "stateOrProvinceCode": "MO",
        "postalCode": 63301,
        "countryCode": "US"
      }
    },
    "recipients": [
      {
        "contact": {
          "personName": "Nick",
          "phoneNumber": 3155555555,
          "companyName": "company"
        },
        "address": {
          "streetLines": [
            "4469 Road"
          ],
          "city": "BATON ROUGE",
          "stateOrProvinceCode": "LA",
          "postalCode": 70808,
          "countryCode": "US"
        }
      }
    ],
    "shipDatestamp": "2023-06-02",
    "serviceType": "STANDARD_OVERNIGHT",
    "packagingType": "FEDEX_BOX",
    "pickupType": "USE_SCHEDULED_PICKUP",
    "blockInsightVisibility": false,
    "shippingChargesPayment": {
      "paymentType": "SENDER"
    },
    "labelSpecification": {
      "imageType": "PDF",
      "labelStockType": "PAPER_85X11_TOP_HALF_LABEL"
    },
    "requestedPackageLineItems": [
      {
        "weight": {
          "value": 4,
          "units": "LB"
        }
      }
    ]
  },
  "accountNumber": {
    "value": "740561073"
  }
}

I have the following for the header

Dim xmlHttp As Object
    Set xmlHttp = CreateObject("MSXML2.XMLHTTP")
    
    xmlHttp.Open "POST", url, False
    xmlHttp.SetRequestHeader "Authorization", "Bearer " & accessToken
    xmlHttp.SetRequestHeader "Content-Type", "application/json"
    xmlHttp.SetRequestHeader "Accept", "application/json"

I am getting a proper accessToken, so I'm wondering if its my format but I keep comparing it to the example and see no problem

Any help is appreciated. I can provide more code if needed.

Here is the url I am posting to: "https://apis-sandbox.fedex.com/ship/v1/shipments"

and here is the exact response I receive:

{"transactionId": "20479caf-d3d9-4a26-819c-d43f7e91c799","errors":[{"code":"BAD.REQUEST.ERROR","message":"The given JWT is invalid. Please modify your request and try again."}]}

Now I suspect that my authorization is actually to blame. in every example on FedEx's site they receive a token with the scope of "cxs". My tokens have a scope of "oob". I have also noticed I receive a token no matter what credentials I put in.

Here are the examples I am referencing: https://developer.fedex.com/api/en-us/catalog/authorization/v1/docs.html

Here is the token I receive:

    {
      "access_token":"826deebc-0788-4bda-995c-e1cb5b588a51",
      "token_type":"Bearer",
      "expires_in":3600,
      "scope":"oob",
      

"resource": ["https://apis.fedex.com/*"]
}