Howdy Quincy,
I just checked your account and can see that you have now activated the license for djjustinmusic1.org. It looks like you figured it out already! But for any future users who come across this topic I wanted to share this guide. As you can see in that link, you deactivate license from My Account but do not add them there. To add a license go to the website where you have installed the plugin, input the license key, and hit save.
Is this issue now resolved for you?
Cheers!
– Brook