Please help

Hi there,

First of all thank you very much for creating such beautiful plugin. I am using it since last one year and very much happy with it.

It would be grateful if you help me in resolving following problems that i am facing with your plugin.

1. When I add Image to the answer, it is not clickable format. My users are not able to click on the image and enlarge it.
2. How to exclude Answers from the deafult wordpress search. When I search on my website, it is showing both the question and answer as well.
3. I am getting a rare error while accessing the answers.
Notice: Undefined variable: answer_id in /wp-content/plugins/dw-question-answer/inc/Template.php on line 774
I am getting this error only when I access the answer through search function. Actually I have disable indexing of answer and in rest case it is directed through question tag only.
In this case, please help in resolving this error or disable answer completely from the search function or redirect answer to the question. Any of these option will be help to me.
5. How to set the default image for question. When I search an keywords on my website, it is showing me blog post and question as well. Now my problem is my blog post has a good featured image but the question does not have the same. So, few of the search post show image and rest do not. How to solve this problem?

The page I need help with: [log in to see the link]