A valid license is required to update an add-on. Add-ons as the Ad Slider that come without a license key can only be updated manually.
If automatic updates are available, they will work like the updates WordPress provides for other plugins. You will see if a new version is available either on the Plugins page or on Dashboard > Updates.
You can also find the latest version of your add-ons through your account.
Updating add-ons using composer
Advanced Ads add-ons are currently not available for direct downloads via static URL. As a workaround, you can use the Satispress plugin. It uses WordPress admin functions to check for a new plugin update, and downloads and stores that update in a local repository on your WordPress server. You can then pull this version from there.
See the linked GitHub repository for more information.
Troubleshooting Add-on updates
If automatic updates via the Plugins page in WP-Admin do not work, this can have several causes.
If either issue does not match then, please contact us.