If you have recently installed the most popular SEO plugin for WordPress, there is a possibility your title attribute is displaying twice. This won’t do any good to your search engine position and it may confuse visitors.
How to Fix Duplicated Title?
1. Connect to the FTP and navigate to your themes’ directory.
2. Download and open
header.php with your preferred editor like Notepad++.
3. Search for title attribute and replace the existing value with
<title><?php wp_title(''); ?></title>
4. Save changes.
5. Upload & replace the header.php on your server.
The double title problem should be now fixed. If you are still experiencing problems, please leave a comment.