Upgrading the Improved AJAX Login & Register is very easy, and can take only in seconds. If you noticed that there is an upgrade from the dasboard, just simple follow these steps:
Login to Offlajn.com, and navigate to your download area. If your subscription is valid you can find always the latest versions of the purchased extensions. Download what you would like to upgrade.
To install the new version of the extension, you need to login to your Joomla! administrator page. Log-in here with Super-user account to can access the installation area, or click on the New update available text in the dashboard.
After successful login, go to the Extensions/Extension Manager.
Then browse the downloaded file, and simple click on the install. You don't need to worry about to install the full zip file, all of the stored settings won't be touch.