I have created a WordPress website namely: iccoindia.org. Recently an error started to occur, when I log in to the Wp-admin and start using the website it is working fine. But in normal case, the website is not working properly, all the pages jas become static, even if I change the page, the URL changes but the page layout remains the same. I have disabled the plugin individually and reenabled it, still, the problem is there, I have changed the .htacess file, still, the problem is there. I don't know how to resolve the problem.
Seems like there are any plugins causing this issue because your pages URL is change but page title, contents, images are same of previous page. You need to share your admin credentials to any proffessional because this error need to fix after check all plugins and settings.
Are you saying that when you click on a link, the browser loads the exact same page? If yes, then @seomanualsubmission is right. Feel free to PM me, I can help wih it Also, you can post the link here. If you don't want it public, PM me the link.
Y Yes, the same problem is there. We have disabled the plugin individually, but the problem is still there, so it's not the issue of the plugin.
Disable all Plugins, Change the theme to Default WP Theme and change .htaccess file to default WordPress .htaccess file. Try it again and see.
I noticed that you also have some broken links on your site. For example: iccoindia.org/media/news-press-releases/ - Says "Page not found" in the title bar and is a page with a header and footer only.