Attach plugins to my account and update

Hi I bought 4 PugIns for the theme. Unfortunately I could not get it from my account. Don't know why that didn't work either. Since I needed this I bought it without using my account. Now 2 questions: Can the plug-ins be added to my account afterwards? There were updates from 2 plug-ins shortly after purchase, how can I update them? The purchased plug-ins: catch-fullscreen-pro.2.3 catch-infinite-scroll-pro.2.1 essential-content-types-pro.2.1 essential-widgets-pro.1.8 Many thanks for the help. regards Heinz