If you are not seeing notifications for new voicemails in your Grasshopper App, please try the following troubleshooting steps:
First, quit the app or restart your phone. This will refresh the application and allow any stuck voicemails to populate.
Second, ensure that notifications are enabled on the app. To check this, open the Grasshopper app and go to Settings. Scroll to and select Sync & Notification Setting. Then, check that all boxes are checked off for the extension(s) that you want to be notified for on this device.
Third, confirm that your mobile number is associated with the app. Open the app and go to Settings and go to My Mobile Number. The phone number listed here should be the number associated with the mobile device you are using.