Update 3 – Resolved
I’ve updated .htaccess and everything is working fine. The new .htaccess code is,
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /blog/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /blog/index.php [L]
DirectoryIndex index.php
RewriteEngine on
RewriteCond %{REQUEST_URI} !-U
RewriteRule ^(.+) https://mortgageforeclosuresolutions.biz/blog/$1
</IfModule>
# END WordPress