When i have upload all files (phpback_v1.2.0 files from http://www.phpback.org/) to my web hosting company and fill in the details.
for PHPBack installation

(MySQL hostname, MySQL username and password, MYSQL database) & admin name, email, password and click proceed i moving to the next step.

Then i fill in the details there.
Feedback title, Mail email, leaving recaptcha blank because I don't know how it works yet.,
and click proceed. when i came to http://feedback.supportportalen.mobi/install/install2.php i get error.

(HTTP 404-error), im going back to my ftp and take a look at the install map.
The install map is empty. Why?

Then if i go to http://feedback.supportportalen.mobi/ i get error:

A Database Error Occurred
Unable to connect to your database server using the provided settings.
Filename: core/Loader.php
Line Number: 347

Can you explain how I can solve the problem?

https://dl.dropboxusercontent.com/u/42214358/supportportalen/errors/error_install_phpback.mp4