Is Verizon aware the Emergency Alerts feature has not worked on the Droid MAXX since the 4.4 software update? Check out other web forums like the Motorola site https://forums.motorola.com/posts/4db2b6c906 and you see that there has been discussion about the issue.
When other phones around me (iPhones, Samsungs and even my wife's Razr Maxx) are sounding off with the latest Amber Alert or Weather Alert my MAXX misses them all. And yes I have checked the options in the app and they are set the same as the other working Android phones.