mobile

I´m having a problem with unlocking..... :(
I have the "an unknown error occurs, which may be a network connection issue. Please wait and try again later."

I've seen that many people have had this problem and signing up for the device tracker would be a good idea. I tried to sign myself up for the device tracker (to check if my serial number is in their data base). This didn't work, so I called the asus support and they told me that the device tracker doesn't work and that they're on it (which I highly doubt)... But I did ask them the question whether they could see if my serial number is registered there. They said that when they typed my serial number they saw that it was connected to my email-account so they thought this was the answer to the question. I don't really know whether it is, but I still can't sign up for device tracker or unlock the tablet....

Please help! (The motivation ship is sinking...:()