Subdomain VHost File. It works, but not for the subdomain
I've followed countless questions and tutorials on DigitalOcean and other sites on creating a vhost file. I've done it, and I can get my site, http://nder.rocks to display a page. However, http://Alexa.nder.rocks does not. I copied the Vhost file from nder.rocks and changed it for Alexa.nder.rocks. Yet Alexa.nder.rocks doesn't show.
I even went and disabled nder.rocks's vhost and now Alexa.nder.rocks website is showing up when I visit nder.rocks. So, I know the vhost file works. I know there are zero issues in permissions. So what gives?
I've got the subdomain as an AName in DO's preferences. Pointing to the same droplet (I only have the one droplet). It's been two days so TTL should have updated. Right? What am I missing?