I registered a trello account in 2019 and joined in a private board with some course documents. It worked well at that moment. The board has no maintenance after 2019, I suppose.
Now, in 2021 when I try to view that board, I am in trouble.
First, it needs an atlassian account. I don't have an atlassian account. I tried my old trello account, it says the email address has no associate atlassian account.
Second, I try to use the same email address to sign up and finally get a new atlassian account. There is nothing in the account.
So, where is my old trello account and how can I find my documents on that board?