Problem With Demomode


I have a activate demo on my cs-cart 4. The problem is the main user(administrator) doesn`t

[color=#282828][font=arial, verdana, tahoma, sans-serif]Main user(administrator/admin) doesnt works now. [/font][/color]

[color=#282828][font=arial, verdana, tahoma, sans-serif][/font][/color]
[color=#282828][font=arial, verdana, tahoma, sans-serif]// DEMO mode
$config['demo_mode'] = true;
$config['demo_username'] = '';
$config['demo_password'] = 'example';[/font][/color]
[color=#282828][font=arial, verdana, tahoma, sans-serif]

[color=#282828][font=arial, verdana, tahoma, sans-serif]Only the demo user works. I tried to deactivate demo_mode, in hope that, admin user, will work. Stil nothing. I checked that user name and password from the admin-user, everithing is ok, because before i activate demo_mode, that user worked.[/font][/color]

[color=#282828][font=arial, verdana, tahoma, sans-serif]Some ideeas, please![/font][/color]