Hi, I've been trying to join the discord channel for the past couple days also. Went to the "welcome" page and then "rules" page, read the rules, even linked my forum account here to discord then I click on the green check box.. it asks if I want to join the server, after click yes I get this notification (image attached) then after hitting lets go it just takes me back to the discord homepage.
Thought it was user error, because I'm me... so I tried joining the Covid channel. Same kinda process, read through the rules and followed the steps, worked right away. After seeing this post I'm thinking it's not only me having issues joining the LTT discord channel.