My entire website seems to be gone and the url changed

[Boda]

My website is bodabeauty.com.au redirects to https://www.restaurantordersystem.com/  when you visit it.

When checking the backend side on wordpress  wp-admin, it also redirects to the restaurant url..

What could have happened? What can I do?

[PL281]

@Boda 

This seems like your website has gotten compromised. Things to do / check

1) Restore a backup when you know it wasn’t redirecting / update all plugins & themes

2) If restoring isn’t possible, I would check the index.php file along with the .htaccess file - also the header.php and footer.php in the wp-content/themes/YOURTHEME folder

There maybe some additional code in there re-directing the site - also I would check your database specifically the wp_options table for the site_url and home_url records