Yep I'm getting the error too. I am also completely lost without my fitday. I plan ahead of time however if I want to do any modifications then I don't know if its ok. Same thing happens if for some reason I can't get online. They normally get it fixed pretty fast.
Mine seems to be fixed now. Good thing, I was wondering how much I could have for a snack. Hard to figure out since I couldn't remember the calories in a couple of things I ate.