can’t access wordpress through website.com/admin

Hi,
installed yesterday the plugin, was trying some settings and today, when tried to login to worpress panel through website.com/admin, was redirected to http://www.website.com/login/?redirect_to=http://www.website.com/wp-admin/ – so basically can’t enter into the control panel.

Had to move away the plugin files through FTP in order to be able to open the control panel again.
Now I put back the plugin files through FTP and again I’m being redirected. I guess it is an option inside the plugin giving me this problem, but can’t find out which one.
Can you help me?