Addons are nullable, you just have to edit a bit of js in this file : /wp-content/plugins/google-analytics-premium/pro/assets/vue/js/settings.js
Look for the property isAddonActive and mod accordingly
After having installed and activated the corresponding addon of course. Once you do this, you will have access to the settings for the addon. If you pay attention they are identified by slugs such as eu-compliance, ecommerce... so you just have to override the validation function (which looks in some array to see if the addon is present) and return true in case parameter matches the slug of the addon you want to enable.