I have a small problem because I can’t load more links in the form * .html to the MMM-Remote-Control module. When I try to do my own thing, only the same page loads, and by going manually to others, the same page still loads, and the name in the address bar changes.

This is what it looks like when trying to load the narzedzia.html page.
(narzedzia - tools)
It actually loads the lustro.html page
(lustro - mirror)

I did this:

    getDom: function() {
        var wrapper = document.createElement("div");
        if (this.addresses.length === 0) {
            this.addresses = ["ip-of-your-mirror"];
        }
        wrapper.innerHTML = "http://" + this.addresses[0] + ":8080/index.html";
        wrapper.innerHTML = "http://" + this.addresses[0] + ":8080/lustro.html";
        wrapper.innerHTML = "http://" + this.addresses[0] + ":8080/narzedzia.html";
        wrapper.className = "normal xsmall";
        return wrapper;
    },

            this.expressApp.get("/index.html", function(req, res) {
                if (self.template === "") {
                    res.send(503);
                } else {
                    res.contentType("text/html");
                    var transformedData = self.fillTemplates(self.template);
                    res.send(transformedData);
                }
            });
 
            this.expressApp.get("/lustro.html", function(req, res) {
                if (self.template === "") {
                    res.send(503);
                } else {
                    res.contentType("text/html");
                    var transformedData = self.fillTemplates(self.template);
                    res.send(transformedData);
                }
            });
 
            this.expressApp.get("/narzedzia.html", function(req, res) {
                if (self.template === "") {
                    res.send(503);
                } else {
                    res.contentType("text/html");
                    var transformedData = self.fillTemplates(self.template);
                    res.send(transformedData);
                }
            });

            fs.readFile(path.resolve(__dirname + "/index.html"), function(err, data) {
                self.template = data.toString();
            });
 
            fs.readFile(path.resolve(__dirname + "/lustro.html"), function(err, data) {
                self.template = data.toString();
            });
 
            fs.readFile(path.resolve(__dirname + "/narzedzia.html"), function(err, data) {
                self.template = data.toString();
            });

Unfortunately, I would like it to work properly as I would like. If someone can solve my problem, I can send something to paypal $$$.

Thank you in advance for explaining how to do it correctly.