Have you registered and added a device but every time you click on a function you're seeing the packages page? This will be because you skipped the payment page when you registered so your account isn't fully active yet. All you need to do to get up and running is select a package, make the payment and then the device you've added should begin tracking and you'll be able to access all of the features available on Device Tracker Plus.
Alternatively, it could be that your card has expired or your payment has failed. If you'd like us to check for you please get in touch HERE and one of out friendly customer advocates will be happy to help you get back up and running.