[WPMU DEV Dashboard] Login action opens wp-login.php

Hello,

after installation of WPMU and activation of Humidbird and Defender plugin I can not login directly from login screen:

1) when I insert login data on page http://www.joeconsult.eu/akoprenajimat/prihlasit/

//removed credentials by staff

2) Iam redirected to http://www.joeconsult.eu/akoprenajimat/wp-login.php (here I can succesfully login)

I don’t exactly know at which point of Humidbird and Defender setup I did the mistake. Could you help me.

Thx a lot Joe