I tried your link and I got;

The owner of js-dev.carpediemqm-dev.fr has configured their website improperly.

FredMcD said

I tried your link and I got; The owner of js-dev.carpediemqm-dev.fr has configured their website improperly.

This site is working perfectly https://js-dev.carpediemqm-dev.fr/ if it ask for advance mode do it and login by given login detail. Thanks

Hi,

When I type in the text box you mentioned, I can enter characters, but the page sometimes freezes for long periods of time. Is that what you're seeing?

The reason the page is freezing is because of this code:

    (function activityLog() {   
        var url = '/en/en-check-inactive-loggedin-user'
        var userid =79
        $.ajax({
            url: url,
            type: 'POST',
            async:false,
            data: {userid: userid},
            success: function (data) {
                obj = JSON.parse(data);
                if (obj.success == true) {
                    $('#online_status').html('');
                    $('#user_offline').addClass('active');
                    $('#user_online').removeClass('active');
                }
                if (obj.success == false) {
                   
                }
            },
            complete: function () {
                setTimeout(activityLog, 1000);
            }
        });
    })();

Every one second, you're calling the activityLog() function, which sends an AJAX request to your server. The problem is that you have "async: false" set, which will make the request synchronous. This means that the page will completely freeze from the time you call this function to whenever your server returns a response, which can be several seconds long (and this isn't a Firefox issue, you can see the same thing in other browsers). To fix this, you would need to make the request asynchronous, so that the request can happen in the background without freezing the page.

BTW, I left your site open for a couple of minutes, and noticed that your site is sending several requests a second to your server for as long as your page is open, which I'm guessing isn't the intended behavior and which wil make your server pretty slow. You might want to look into reducing the frequency of some of these calls.