@Makyen I followed the prompts, and I clicked the "okay, done it" button, and the page says "We haven't received the email yet. Check back in a few minutes." That was a few hours ago. I was thinking I'd get an email because of this page
stackoverflow.com/c/charcoal/join/submit, which says " To get access to Teams, please click the link in the email we sent you. This will verify your invitation. The email may take up to 15 minutes to arrive. Usually less."