Don't forget to order your supplies for this year's International BookCrossing Day (April 21)! The last day to order them is March 25, because we'll need time to get them to you before the big day arrives. And this year's labels were designed by Azuki and they're great. So don't miss out, get your orders in while you can!
I don't know if anything has changed there, but I do know that those fields will default to whatever's in your profile; if the site isn't allowing you to make a JE without filling those boxes, you might edit your profile to include location information and see if that helps.