Dheeraj kumar

Seems like you there are files missing in your wordpress installation. I recommend you to delete all the files you have in your installation folder and download a fresh copy of wordpress.zip file from WordPress official site and extract them in your root folder and try again.

Try to install LAMP (https://www.digitalocean.com/community/tutorials/how-to-install-linux-apache-mysql-php-lamp-stack-on-centos-6)
in your centos

And then install wordpress
https://codex.www.ads-software.com/Installing_WordPress

Could you share your URL for your wordpress?

If not try reading this guide
https://codex.www.ads-software.com/Moving_WordPress

Hey,

Why don’t you update it first? and then try accessing it? If not, try switching to default theme and see if you can able to access your site first? If yes means, then it has to do something with your theme.

Seems like the error is not related to wordpress. It has something to do with your DNS as we are unable to access even the error page.

If you have a spam filter and when the commentator enters url also when commenting, obviously his comment will held for moderation.

It would be better if you implement Disqus comment system or Facebook comment system, this will help you get rid of all the above problems with your current comment system.

I hope this helps

have you tried access with index.php page

mywebsite.com/blog/wp-admin/index.php

sometimes a cache may redirect you like that.

Try searching in the plugins directory for your fedelta integration module, if there isn’t, then you need to hire someone who can do that.

Disable all your plugins and try to access your admin panel. And activate each plugin one by one until you recreate the same problem.

To disable all your plugins, you can just simple rename the plugins folder or you can try the following.

Use phpMyAdmin

In the table wp_options, under the option_name column (field) find the active_plugins row

Change the option_value field to: a:0:{}

Hope this helps.

Yes you can.

Read this on how to create custom 404 error page.

https://codex.www.ads-software.com/Creating_an_Error_404_Page

Just changing the DNS servers won’t alone fix this.

You need to read this
https://codex.www.ads-software.com/Moving_WordPress

Good luck ??

You can use this plugin to display random posts.

Create a page and the short code into that page using the below plugin.

https://www.ads-software.com/plugins/advanced-random-posts-widget/

It seems like your perma links are not working and there by it results a 404 page.

Are you sure you have your htaccess file? if you already have your htaccess file means, try deleting it and try again.

Change your site URL in your wp config file. change from https to http, then you can able to log into your wp-admin panel.

Read the following guide if you want to change your site url.
https://codex.www.ads-software.com/Changing_The_Site_URL

Your website is loading fine for me. What error are you getting? If you can provide more information it would help us to help you better.