It's definitely worrying to see that you're experiencing issues with your Verizon Messages notifications on your Windows 10 computer. We understand that seeing important details about the sender and message received on these notifications is extremely important, and we will be glad to assist you. The following link will provide you with the process of customizing notifications. Please scroll to the bottom of the page and follow the steps found in the "Windows" section. https://www.verizonwireless.com/support/knowledge-base-209297/
Also, it's worrying to see you're experiencing issues with syncing the app with Windows. Please tell us, when did you start experiencing these issues? Could you please provide us with more details about the issues you're experiencing?
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!!