copy – migration problem

Hi, i have the follow issues:

i created a subdirectory in my hosting files (mysite.eu/next) and inside in this a copied the files from the orginal site.

original site: mysite.eu
copy of original in subdirectory: mysite.eu/next

except files, i was created and a copy of database (with different user and password).
So i have a copy of files and database (in subdirectory “/next”).

i updated mysite.eu/next/wp-config.php
define(‘WP_HOME’,’mysite.eu/next’);
define(‘WP_SITEURL’,’mysite.eu/next’);

define(‘DB_NAME’, ‘new_db_name’);
define(‘DB_USER’, ‘new_user’);
define(‘DB_PASSWORD’, ‘new_password’);

In the copy (of subdirectory /next) i changed template and removed the old.

The problem is when i type mysite.eu/next show me the site of mysite.eu (with old template)

But when I’m connected in mysite.eu/next/wp-admin in mysite.eu/next show me the correct template.

Any idea how to solve this?