Thanks Eli and Vijay for the answer. I'm still a bit unsure as to how to get it fixed. What I will do is contact the plugin developer and see if they can make sense of the issue. As far as I can tell while browsing the site there is no issue.
When I go to a print page, it shows up as a printpage, so I just don't know where the redirect is. It doesn't actually redirect. Hope that makes sense.
Will look into this further!
Thanks
Simone