I'm sorry you are having issues with your network extender, Surveyn1. We know how important this device is for your indoor coverage. Are you still experiencing issues with this device?
I have CenturyLink as an internet provider and cannot get the Samsung 4G Extender past 8a during set up?
If you purchased the Extender directly from Verizon it should have been registered/associated to your account, but may not have. Have you called 800-922-0204 to verify it is registered?
Also, check out this resolution one user found for 8a issues: