Stop an inactive website from sending auto-updates to Client Site

Problem Sometimes a client leaves our service before we can deactivate our plugin “RWP: Updates Reporting” and so it keeps sending all auto-updates to the Client Site, essentially spamming it for eternity. Pre-requisite: This guide is only for outdated versions of our plugin RWP: Updates Reporting prior to 2.4 (or older plugin FU: Updates Reporting). Use this guide for RWP: Updates…