I think you are experiencing a portion of the issue reported here.
There is a current issue with Verizon LTE where a small number of modules are having connection troubles, and others may connect properly but show incorrect/unknown signaling.
While your panel is reporting 0 signal strength, it is still reporting sensor activity and responding to status requests we send from Alarm.com. It is reporting an unknown value when I try to update the signaling status.
When I ping your system it is responding quickly. Since you are still seeing notifications and activity is loading in Alarm.com it looks like you are just experiencing the signal reporting part of this operations alert.
It should be resolved soon without the need for further troubleshooting.