<h3>Features</h3>
<ul>
<li>Envato oAuth button in registration form</li>
<li>AwesomeSupport integration for Envato products</li>
<li>Activation API for themes and plugins developers</li>
</ul>
<h3>Activation themes/plugins for developers</h3>
<ol>
<li>Fill settings in wp_admin > Vatomi > Settings > Envato Settings</li>
<li>Create Licenses page in wp_admin > Vatomi > Settings > Licenses</li>
<li>
Use these links to let users activate your theme/plugin:
<ul>
<li>
Activate
<pre><code><a href="<?php echo esc_attr( 'https://{YOUR_SITE}/licenses/?vatomi_item_id={ITEM_ID}&vatomi_action=activate&vatomi_site=' . urlencode( home_url( '/' ) ) . '&vatomi_redirect=' . urlencode( admin_url( 'admin.php?page={YOUR_THEME_PAGE}' ) ) ); ?>" class="button button-primary">Activate</a>
</code></pre>
After button clicked, user will be redirected back to their site on the page <code>admin_url( 'admin.php?page={YOUR_THEME_PAGE}' )</code> with available GET variables, that you can use:
<ul>
<li>vatomi_action (activate, deactivate)</li>
<li>vatomi_item_id (item ID)</li>
<li>vatomi_license_code (Envato purchase code)</li>
</ul>
</li>
<li>
Deactivate
<pre><code><a href="<?php echo esc_attr( 'https://{YOUR_SITE}/licenses/?vatomi_item_id={ITEM_ID}&vatomi_action=deactivate&vatomi_license={PURCHASE_CODE}&vatomi_redirect=' . urlencode( admin_url( 'admin.php?page={YOUR_THEME_PAGE}' ) ) ); ?>" class="button button-primary">Deactivate</a>
</code></pre>
After button clicked, user will be redirected back to their site on the page <code>admin_url( 'admin.php?page={YOUR_THEME_PAGE}' )</code> with available GET variables, that you can use:
<ul>
<li>vatomi_action (activate, deactivate)</li>
<li>vatomi_item_id (item ID)</li>
<li>vatomi_license_code (Envato purchase code)</li>
</ul>
</li>
</ul>
</li>
</ol>
After theme/plugin activated, you will be able to use Vatomi API:
<ul>
<li>
Get URL to ZIP file:
<pre><code>https://{YOUR_SITE}/wp-json/vatomi/v1/envato/item_wp_url/{ITEM_ID}?license={PURCHASE_CODE}&site={ACTIVATED_SITE_ADDRESS}
</code></pre>
</li>
<li>
Get item current version number:
<pre><code>https://{YOUR_SITE}/wp-json/vatomi/v1/envato/item_version/{ITEM_ID}
</code></pre>
</li>
<li>
Check valid purchase code (if user purchased item from you):
<pre><code>https://{YOUR_SITE}/wp-json/vatomi/v1/envato/check_license/{PURCHASE_CODE}
</code></pre>
</li>
</ul>

Vatomi

Envato oAuth registration. Support Envato customers users with AwesomeSupport plugin.

Themes Kingdom

Scebo is an advance WordPress based customer support system. 
Let your customers submit support requests in a minute! Set ticket categories, statuses and priorities, notify your customers as soon as you reply to its requests. 
Install Scebo add-ons to extend its functionality and usability.
Check <a href="http://www.themeskingdom.com/scebo/documentation.php" title="Scebo Documentation" rel="nofollow ugc">Documentation</a> for more information.

Vatomi vs Scebo – Customer Support