How often can you dig? Why is it sometimes I just get turned away and can't go in? I just did yesterday and my alert said I could dig again but when I clicked it, the fairy wouldn't let me in. What do you have to do?

You can only dig on the 6th and 7th of each month. I believe the time frame between digs is totally random. There is a widget you can put in your sidebar that turns green when you can dig again.

Ooooh, thank you!! =D , that's very helpful!