I am trying to connect to my DB with Navicat. However, I can't seem to get the right hostname/IP. My URL isn't working.
What should I use (and where might I find it?)
the hostname is whatever you set up when you created the db. you can test it by going to that host name in a browser and you should get a login prompt, and then phpmyadmin. If you're trying to connect to your DB from a home computer with some software then you'll have to go into the panel and edit the database to allow your own IP address access.