[Plugin: Authorsure] Can't save settings / Page Not Found

Hi – I installed authorsure on my site, and it worked great. Then, I needed to move my WP to another host. Everything went smoothly and my site is successfully setup on the new host. After adding a new post, I realized that the “last updated date” that’s inserted by authorsure was not current. I went into my Settings – Authorsure and made some updates. When I clicked Save, it took me to a Page Not Found, and didn’t save anything.

I’ve tried deleting authorsure, clearing my cache (twice), and reinstalling, but I’m having the same problem with the save (and it’s still posting the old ‘last updated’ date).

my site: imakeityoumakeit.com (authorsure displays at the bottom of the Patterns page)

Any ideas? Thanks so much!