/blog/ redirects to homepage of a website

Hello All,

Hope someone can help here.

The blog I am working on : https://www.passionateaboutfitness.com/blog/ redirects to the website homepage: https://www.passionateaboutfitness.com when I change the permalinks to the custom structure : /%postname%/

I had a look at the .htaccess file , this is what’s inside it :

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /blog/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) /blog/index.php/$1 [L]
</IfModule>

# END WordPress

At the moment the permalinks structure is on default, how can I fix this?

Can someone please help . Thanks.