Firebase Rules For Voice Record Pro -

{
    "rules": {
          "users": {
            ".write": "auth != null",
            "$user_id" : {
              ".read": true,
              ".write": "$user_id === auth.uid"
            }
          },
          "publicRecordings": {
            ".read": true,
            ".write" : "auth != null"
          }
    }
}