Woodmart is not updating

Woodmart theme is not updating from 7.4.3 to 7.5.1 , I just purchased my own subscription couple weeks ago, and replace the previous Code,
please advise what to do
MESSAGE RECEIVED: Update failed: Download failed. Unauthorized,
Thank you

Hi,

You can use Envato Market WordPress Plugin to get auto update features. This plugin helps customers receive updates to their premium WordPress Themes & Plugins purchased through Envato Market (ThemeForest & CodeCanyon).
you can download the plugin from here:

Using this Envato Market WordPress Plugin you will see:

  1. Latest version (need to update version) number
  2. Details view option for the latest version

Otherwise you can download the update version from Envato Market Downloads page and update manually using ftp or control panel.

Note: Better to keep a full backup before doing the update.

Thanks