Cannot login - by: rocco.iacchetti

Good morning.

I've installed ProjeQtor on my Ubuntu 16.04 server.
Everything seems to go well and I immediately see the projeqtor configuration page.
The server is running plesk and the projeqtor is under a subfolder (myservername.com/projeqtor).

After configuration I see the login page.

Every combination user - pwd fails: "login parameters not valid".

I've tryed to change the password directly on the db, but same result.
If I push the "forget password" button, it gets stucked indefinitely.

See no error log in apache2 log file.

apache2 -v
Server version: Apache/2.4.18 (Ubuntu)

Php -v
PHP 7.0.30-0ubuntu0.16.04.1 (cli) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
with the ionCube PHP Loader (enabled) + Intrusion Protection from ioncube24.com (unconfigured) v10.0.3, Copyright (c) 2002-2017, by ionCube Ltd.
with Zend OPcache v7.0.30-0ubuntu0.16.04.1, Copyright (c) 1999-2017, by Zend Technologies

What's wrong? Can you help me?

Regards.
Rocco Iacchetti.