Norton Mobile Security - Anti-Theft

Good Morning, I recently down loaded full paid versions Norton Mobile security to both my LG AS855 smartphone and Motorola Xoom.

Here in is the issue, when I check the anti-theft and attempt to locate my device with the xoom it works great.  However, when I attempt to do the same with the LG phone it keeps searching and never locates it.  I have tried installing and reinstalling the anti-theft plug-in, but to no avail. Any assistance is most welcome.  Thank you