The Knot is sort of acting funny right now, so it could be that.
It should say edit at the bottom of the page when you click on preview your wedding website.
ETA: I just checked mine and mine isn't working either. I'm willing to bet it's just TK acting up, so just check back soon or maybe email/call someone from the Knot.
April Siggy Challenge-Wedding Escape: Reading HG/dreaming about Peeta....
Bio-Updated 4/22**
Re: I can't edit my web page!