Questions Page not working and more

I have a few questions.

1. The link lbeachny.com/questions is returning a 404 error. The other links are working correctly but not this one and I cannot figure out why.

2. I posted asked a question and it showed up on the front end but when I go to the backend it was not there. It shows that there is one question but the question is no where to be found. I have posted a screenshot.

3. How can I change the page template that is used for the plugin? I have attached a screenshot of this too... It is just a little off center.

thank you