1. Purchase code
Please read the official Envato Elements Guide - https://help.elements.envato.com/hc/en-us/articles/360000621443-Do-I-need-a-purchase-code-
Envato Elements' Clients can only update the theme and bundled plugins using FTP.
The latest version of the bundled plugins can be found in this directory /theme-name/vamtam/plugins.
You can check the theme's changelog here: https://vamtam.com/changelog/
Envato Elements' Clients are not entitled to Support from the Author. However, we have hundreds of articles at your disposal in the KnowledgeBase. If you need support, you can buy a license here - https://themeforest.net/user/vamtam/portfolio.
You will find details here -