Actually, I think that it means you have to wait before you can access it again. Mine has an 8 instead of 7 (probably something to do with dates) and I checked and the two means two hours. Later it'll probably be a 1 for one hour or another random number (i.e. 58) that just means how many minutes you have left if you're under an hour.
Sorry if I made that sound really complicated...
It just waiting a certain amount of time. It'll work in an hour or so for you.