Print and Download not shown

Sure. Below snippet shows download and print buttons on localhost but not on production server.

UPDATE: I know why it "works" on localhost. It also works on production server but only on desktop browsers. When I switch to mobile mode an reload the buttons are missing on both localhost and production. Is this on purpose? I mean mobile phones do have the ability to print via air printers and store data locally or in cloud drives.

import React from "react";

export default class Document extends React.Component<any, any> {
    constructor(props:any) {
        super(props);
        const script = document.createElement("script")
        script.src="https://documentcloud.adobe.com/view-sdk/main.js"
        document.addEventListener("adobe_dc_view_sdk.ready", () => {
            var adobeDCView = new AdobeDC.View({clientId: "<creds>", divId: "adobe", locale: 'de-DE'});
            adobeDCView.previewFile({
                content:{location: {url: props.url}}, // e.g /assets/pdf/example.pdf
                metaData:{fileName: props.title}
            }, {embedMode: "SIZED_CONTAINER", showDownloadPDF: true, showPrintPDF: true,
                showFullScreen: false});
        })
        document.head.appendChild(script);

    }


    render () {
        return (
            <div className={"wrapper"}>
                <div id="adobe"></div>
            </div>
        )
    }