Man, I understand that a lot of people have already asked this question but in reality the link is invalid both in the game and here.
in short it says “this invitation has expired and is no longer valid”
I don’t know if it’s a bug or some error.
I did my best to make sure it wasn’t my mistake I spent 2 hours looking for the valid link. including in your posts and those of your colleagues and they all gave the same result. I’m really sorry but I think they need to report to discord for probably their mistake. I don’t want to bother you, much less irritate you with a repeated question, I just wanted to help by reporting a third party error that could harm you