Category questions page issue

All the page of plugin works great except when I use this code to show one category questions

[dwqa-submit-question-form category="catslug"]

It show the page like this 




But it should be like this two screenshot



And 





You can check it in the live site 

This url using category questions code 
http://omanbio.com/bio2

And this url show the normal page for all questions 

http://omanbio.com/dwqa-questions