I'm having the same issue.
When I bought the Samsung Extender from Verizion late last year it worked great. Then I had to suspend my Verizion account for roughly 30 days and now I have reactivated my Verizion account now and I plug my network extender back in after being unplugged for the 30 days and now the system light flashes fast red and the GPS light is a solid purple. I plugged in the GPS extender cable and its outside on my top deck and the GPS won't connect. I have to have this or my Verizion service is useless in my home.
Network and power a blue
My zip code is 30265 if you can look up to see if there are any issues in my area.
Ok it is now working !
Yes the network extender needed to reactivated on my account then rebooted for 10 seconds.
It took the GPS roughly 20 minutes to connect but once it did it was working as it should.
Thank you for the suggestion on the " reactivation" it worked!