Bought the premium edition. When trying to install the plugin, it says that its already installed. But only the "Free" version is currently installed.
What kind of plugin? where? Give me more information about your problem with pictures if you can. I can help you.
Make sure you download the Pro version here: https://marketplace.digitalpoint.com/better-analytics-pro.3355/item It should be installed like any other plugin (into your wp-content/plugins/ directory). It doesn't need to be specifically enabled because it's not a stand-alone plugin... rather it extends the normal version. The normal version should show if it detects the Pro version when looking at your list of plugins like so: This is the support area for: https://wordpress.org/plugins/better-analytics/