Access Denied after upgrading old Xampp in Windows 10

Hi !

I've upgraded from a 6 year old Xampp to the next latest one:
xampp-win32-7.0.23-0-VC14-installer.exe

1. Before install I did a Mysql Dump All:
mysqldump -u root -p --all-databases > all-db-dump.sql

2. After install I Imported that all-db-dump.sql from phpMyAdmin.

3. When starting my PHP-application filmtv.php I get the above errors, see attached filmtv.php.png.

Look at the screen-dumps and I hope someone out there have an idea of whats wrong, cause I expected it to work smoothly without having to change my application.
Also, if I do a minor change using phpMyAdmin like adding a new user then I cannot use phpMyAdmin anymore it'll respond that user/pwd is incorrect, very strange. Up to now I've done 5 re-installs because of that.

Screenshots:
phpMyAdmin users
filmtv.php
filmtv.php includes

Source-code:
adam.php:
<?php
$user="root";
$host="localhost";
$password="tenthirty";
$database = "ljung";
?
bertil.php:
<?php
$cxn = mysqli_connect($host,$user,$password,$database);
$cxu = mysqli_connect($host,$user,$password,$database);
?>

_By the way, my Xampp install is:
Includes: Apache 2.4.27, MariaDB 10.1.26, PHP 7.0.23, phpMyAdmin 4.7.4, OpenSSL 1.0.2, XAMPP Control Panel 3.2.2, Webalizer 2.23-04, Mercury Mail Transport System 4.63, FileZilla FTP Server 0.9.41, Tomcat 7.0.56 (with mod_proxy_ajp as connector), Strawberry Perl 7.0.56 Portable_
_
Cheers,
Torbjorn
Stockholm