Scheduled refresh of a RestAPI (Post request)

Hi all, 
In Power BI desktop I have PBIX file, that is working fine and I can publish the file to our workspace. 
The file is extracting data as a RestAPI connection

But when I want to create a scheduled refresh it seems like it is not working.

I then have created a dataflow, and as long as I only try to get data with a GET request it seems like I can create a dataflow, which will update on scheduled refresh hours.

But one table has to be extracted with a POST request, which is possible in Power Query window of the dataflow, but not to include in the scheduled refresh.

Does anybody have a solution for that?     (query code included below)

let
    // Function to convert a datetime to Unix timestamp (seconds since 1 Jan 1970)
    ConvertToUnixTime = (inputDate as datetime) =>
    let
        unixEpochStart = #datetime(1970, 1, 1, 0, 0, 0),
        duration = Duration.From(inputDate - unixEpochStart),

        // Convert the duration to total seconds
        totalSeconds = Duration.Days(duration) * 86400 + Duration.Hours(duration) * 3600 + Duration.Minutes(duration) * 60 + Duration.Seconds(duration)
    in
        totalSeconds,

    // Define input parameters for startdate and enddate
    startDate = #datetime(2024, 1, 1, 0, 0, 0),  // Input your start date here
    endDate = #datetime(2024, 1, 31, 23, 59, 59), // Input your end date here

    // Convert start and end dates to Unix timestamps
    fromUnixTime = ConvertToUnixTime(startDate),
    toUnixTime = ConvertToUnixTime(endDate),

    // Function to get data with a given offset
    GetDataWithOffset = (fromUnixTime as number, toUnixTime as number, offsetValue as number) =>
    let
        // Define body with the Unix timestamps and offset
        body = "from=" & Text.From(fromUnixTime) & "&to=" & Text.From(toUnixTime) & "&offset=" & Text.From(offsetValue), // Body as URL-encoded parameters

        // Define headers
        headers = [
            firmaid = FirmaId, 
            token = Token, 
            Accept = accept,
            #"Content-Type" = contentType // Content-Type must be x-www-form-urlencoded
        ],

        // Try to send POST request
        response = try
            Json.Document(Web.Contents("https://api.onlinepos.dk/api/exportKoncern", [
                Headers = headers,
                Content = Text.ToBinary(body)  // Send body as URL-encoded data
            ]))
        otherwise
            let
                errorMessage = try Web.Contents("https://api.onlinepos.dk/api/exportKoncern", [Headers = headers, Content = Text.ToBinary(body)]) otherwise null,
                decodedMessage = if errorMessage <> null then Text.FromBinary(errorMessage) else "No response"
            in
                "Request error: " & decodedMessage,

        // Return the result
        result = response,
        sales = result[sales],
        #"Converted to Table" = Table.FromList(sales, Splitter.SplitByNothing(), null, null, ExtraValues.Error)
    in
        #"Converted to Table",

    // Get data in 10 iterations (looping with offset)
    HentMånedensSalgsordrer = List.Transform({0..11}, each GetDataWithOffset(fromUnixTime, toUnixTime, _ * 1000)),
    
    // Combine all data into one table
    KonverterListeTilTabel = Table.FromList(HentMånedensSalgsordrer, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    KonverterTilSalgslinjer = Table.ExpandTableColumn(KonverterListeTilTabel, "Column1", {"Column1"}, {"Salgslinjer"}),
    HentLinjerne = Table.ExpandRecordColumn(KonverterTilSalgslinjer, "Salgslinjer", {"line"}, {"line"}),
    UdvidTabelTilAtViseAllePosterUdvalgtekolonner = Table.ExpandRecordColumn(HentLinjerne, "line", {"firma_id", "chk", "bo_chk", "date", "time", "product_id", "product", "product_group_id", "product_group", "MasterID", "amount", "price", "payment_type", "clerk", "table", "discount"}, {"firma_id", "chk", "bo_chk", "date", "time", "product_id", "product", "product_group_id", "product_group", "MasterID", "amount", "price", "payment_type", "clerk", "table", "discount"}),

    // Change column types for data
    SkiftDataTypeAlleKolonner = Table.TransformColumnTypes(UdvidTabelTilAtViseAllePosterUdvalgtekolonner,{{"date", type date}, {"price", type number}, {"clerk", Int64.Type}, {"firma_id", Int64.Type}, {"chk", Int64.Type}, {"bo_chk", Int64.Type}, {"time", type time}, {"product_id", Int64.Type}, {"product", type text}, {"product_group_id", Int64.Type}, {"product_group", type text}, {"MasterID", Int64.Type}, {"amount", type number}, {"payment_type", type text}, {"table", Int64.Type}, {"discount", type number}})
in
    SkiftDataTypeAlleKolonner