I would recommend checking out this article here: https://help.adblockplus.org/hc/en-us/articles/20614958018707-Check-if-Adblock-Plus-is-installed

if you find you do not have ABP installed, you are welcome to install it at any time. You can see how to do it here: https://help.adblockplus.org/hc/en-us/articles/1500002320801-How-to-download-and-install-Adblock-Plus

We appreciate you taking the time to provide your feedback about the update page. When we update the extension we share the latest options available for Premium. We are exploring options for this page and would love to hear more about how we can make it better. Please reach out to us via our support form and let us know: https://help.adblockplus.org/hc/en-us/requests/new.