Statistical office (Destatis) connect webservice

I had many perfectly working calls to Destatis Genesis, but this year they changed their API and only allow POST requests. Unfortunately this makes it impossible to use Genesis with PowerQuery without programming and distributing a custom connector anymore. 
I have feature request for a custom connector now live here, although I don't have much hope Destatis would do anything about this. Destatis Genesis - certified connector needed for ... - Microsoft Fabric Community

let
    URL = "https://www-genesis.destatis.de/genesisWS/rest/2020/data/table?" & 
        Uri.BuildQueryString( 
            [ 
                username = "YourUsernameOrToken", 
                password = "YourPasswordOrEmptyWhenToken", 
                name = "61111-0002", 
                area = "all", 
                compress = "false", 
                startyear = "2020",
                endyear = "2023",
                regionalvariable = "",
                regionalkey ="",
                classifyingvariable1="",
                classifyingkey1="",
                classifyingvariable2="",
                classifyingkey2="",
                job = Text.From(false,"en-US"),
                stand="",
                language="de"
            ]),
    Quelle = Json.Document(Web.Contents(URL)),
    Object = Quelle[Object],
    Content = Object[Content],
    Tbl = Csv.Document(Content,[Delimiter=";", Columns=5, Encoding=65001, QuoteStyle=QuoteStyle.None])
in
    Tbl