Making sure your LED notification indicator is working is a must, MONMIL84. Let's work on getting this fixed. We'll need to start by gathering some additional details. Does this happen with other applications as well (not just Messages+)? Do you receive LED notifications when the screen is turned off? What do you see when you follow this path? Settings > Display > LED Indicator. What about Settings > Sounds and Vibration > Do not disturb > Hide visual notifications?
Follow us on TWITTER @VZWSupport
If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!