Sometimes you may encounter the following message.
Your Extension Works plugin requires Framework, please active or install it
This is referring to an additional plugin that is required to make your purchased plugin work. You have nothing to fear, you haven't forgotten to add in anything extra.
If you have already activated your purchased plugin, (example) i.e. US Postal Service shipping plugin, then you should see a notification in your Wordpress admin area to either download or activate it. If you haven't downloaded the plugin, then please go ahead and click the link to download and follow the on screen prompts to activate - as you would a standard Wordpress plugin.
You can find the link to install the Extension Works Framework in the WordPress admin area under 'Plugins'