Pligg Support

1st. if i set Validate URL = "true" , any links from internet that are work in my browser , dose not work by pligg , but when i change Validate URL="false" every thing is ok. what can i do to fix that, i need Validate URL="true" , plz help me. if this problem related to my web host plz tell me to i ask from their support. thanks
2nd. my CAPTCHA not work with math but work by solve media in register, why? how can i fix this?
I purchased the template from OXYThemes and I have yet to get that template. I went to his support site and did everything that he asked me to enter to get access and never got any reply from them. Is this a reliable place to buy. When I purchase from your store why am I being asked to enter more information into another website to receive my order. Seems like a privacy problem.
Can anybody explain me whole functionality of groups?
But what i am looking for is the page where all stories/posts are appears fromthe groups/categories the user is following.