In your WordPress administrator dashboard, go to Settings -> General and change both URLs to have https:// rather than http://. It will look something like below:

you might also need to update your .htaccess file in your cpanel. If you can find this file in your root folder, go to seetings in cpanel and show hidden files

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress