Pay Per View Plugin messing up CSS

Hello,
I've been loving your site and all your amazing plugins. But I'm having a problem with the Pay Per View plugin. It's shifting my entire site to the left, my site is not centered anymore.
I really want to use this plugin as I think it will work better for me and is a lot simpler than the Membership plugin. Can you please advise what I can do to fix this issue? Thanks!