Everything looks broken on Firefox on OSX for me (screenshots inside)

[bundat]

On Firefox (using OSX), almost all the letters are missing.
Only a few letters appear (most notable, T, H, E, and F, making it look like everything is saying "THEFT")

That is the thread list, and here are the posts

I tried narrowing down the cause, it seems it's the "Open Sans" font.
Removing the font in "Inspect Element" fixes everything in Firefox for me:

Replacing the font in console made the text appear properly for me too:

 

[tj_cool]

Have you tried clearing your browser cache? It looks to me like your OpenSans font has gotten corrupt.

 

[shaunj66]

We are now a part of EA and you need to subscribe to our patreon to unlock the missing font characters as you have reached the limit for free accounts, I'm afraid.

But seriously, yeah, what @tj_cool said

 

[Costello]

No, I think it's because you live in Antarctica.
These characters aren't officially supported in Antarctica.

Try moving to a real country