Page not found when previewing new or edited coupons
I'm a girl and not very tech savvy so please go easy on me!
I've never been able to preview coupons before posting them because I get an error. And if I preview an edit to an already-published coupon I get a different error.
My website is DenhamDeals.com
First example (error on previewing new, unsaved coupon):
I started to create a coupon called test123 and did not save it, but clicked Preview. It's trying to open a post number rather than the correct permalink structure (which should be denhamdeals.com/coupons/test123):
This is what it tries to open: http://www.denhamdeals.com/?post_typ...0&preview=true
And the error it gives me is: Sorry, but you are looking for something that isn't here.
Second example (error on previewing a change to an existing coupon):
Here is a coupon: http://www.denhamdeals.com/coupons/w...ue-of-the-day/
When I try to edit this coupon, it's trying to open this link:
And the error it gives me is: You do not have permission to preview drafts.
I'm not sure what to do to fix these issues. Thank you for any help you can give me!