Hello
Thanks a lot for your feedback - indeed that help and now the message about RewriteRule directive is forbidden not appearing anymore.
However issue that registration and login form not working still persist

I`m clicking login button and it`s like doing nothing and moving to the main page
you can take a look here
http://www.vw-forum.pl/vw_login.php
just click login button and you will see that behaviour
Any idea what`s wrong here ?
Thanks
Greg