MyBB Community Forums - No CSS shows on forum when I go to the website without a www infront of the url

Link to website: scpforums.com

You can see that when you go to it without a www infront of the URL it shows no CSS, but when I go to it with the www the css does show. How do I fix this?

Your site shows CSS with or with out the www for me.

(2019-01-28, 02:48 PM)iAndrew Wrote: [ -> ]Your site shows CSS with or with out the www for me.

Did you connect on PC or mobile?

(2019-01-28, 03:16 PM)Zerxal Wrote: [ -> ]Did you connect on PC or mobile?

Laptop.

(2019-01-28, 03:43 PM)iAndrew Wrote: [ -> ]
(2019-01-28, 03:16 PM)Zerxal Wrote: [ -> ]Did you connect on PC or mobile?

Laptop.

I guess it's just me, do you know of anything that could cause it?