Actually, I added that about a month ago just because I could on Porkbun but never mentioned it as I'm sure no one cares.

The thought behind it is that it is now a direct URL replacement, besides host name, of the original site.

Ex:
http://disc.yourwebapps.com/Indices/46108.html -> http://disc.nediscapp.com/Indices/46108.html

And because of how the cookies work, you need to log in based on if you're on https://nediscapp.herokuapp.com or https://nediscapp.com or https://www.nediscapp.com or https://disc.nediscapp.com

https://nediscapp.com is the 'preferred' way of accessing the site so I don't plan on fixing the cookie/log on session thing anytime soon (if ever).