After registering your account and processing your payment, you immediately have access to the HTML Forms account area.
Downloading the plugin
After logging in to your account, head on over to the plugins page.
Click the "Download" button to download the latest version of HTML Forms Premium.
.zipfile automatically extracts after downloading, either go to Preferences > General and uncheck “open safe files after downloading” or simply re-compress the files to a .zip again.
Installing & activating HTML Forms Premium
Log in to your WordPress admin panel, go to Plugins > Add New and locate the Upload Plugin link.
Browse to the location where the downloaded plugin package is located on your computer and select it. WordPress will automatically upload the plugin to your server. After that is done, you can safely click the "Activate" link to activate plugin.
Now that HTML Forms Premium is active, all premium features are instantly unlocked.