To check if your AI Call Assistant is active, you can check if there is an Assistant Dialog in the Recent Calls field. If you do not have any assistant dialogs, you can check if the service is active in the Other > Settings menu. If you see the Assistant Settings field in this menu, it means your service is active.
If you do not receive notifications for voicemails, missed calls, or assistant dialogs from your AI Call Assistant, you can enable receiving notifications for calls that your Assistant manages by going to Settings > Getcontact > Allow Notifications on your phone.