Couple of Questions regarding the Q&A PLUGIN

Here's the link to my site

The Q&A Form is not aligned. How do I align it to be inside the template?

Can I add some text contents probably at the top or bottom of the Q&A Form?

There are some weird graphic elements on the form, is it possible to remove? See Attached Image Form1.png

Why can anybody post answers when I already disabled it on the settings? See attached image Form2.png