Using pc, via browser (Firefox fork).

Tried the new 2FA option in settings, but it just gives a weird link that my browser cannot open.

How does 2FA work here? (My email, steam login, &etc, 2FA methods send a text message to my phone with a code to input into the website. Easy peasy.)

I’m quite technical, so my best guess is that this 2FA method is aimed at smartphone apps.

ps, Greetings to all. & thanks @Tom for creating a UK feddit.

*edit (as comments aren't working for me yet)* ~ Thank you @GreatAlbatross for the detailed explanation. Good thing I hit "disable 2FA" after the failed attempt. 
~ So, best to NOT use it for now (via PC). ~

Growing pains indeed. More testing required for that feature. 
(Also TOTP = "top of the pops" to a brit, hehe.)