Don't panic too much about it Hunter.
On one of my browsers (at home), I ALWAYS have to enter my username and password, every time I visit this site.
At work, using exactly the same browser (Firefox) on the same system (Windows 7) it remembers my log in more often than not.
So it's possibly to do with either browser settings or the settings in one of your browser extensions, rather than the site itself.
I'd just save the username/password in the browser's Security Key extension (whatever you choose to use) and that way it's easier to re-fill it in than having to type every time. Make sure you use a unique password for this website in this case! (Using a unique password for /every/ website is recommended)
Nullus Anxietas VI - The Discworld Grand Tour - The Australian Discworld Convention
4-6 August 2017
Adelaide, South Australia, Australiahttp://ausdwcon.org