I went to miro.com and clicked the Sign Up Free button. Upon entering my work email, I was prompted to join my company’s team. Some of our Miro boards are set up so that anyone with the link can edit, but I couldn’t open them or any other Miro link, which would always send me to the “Your request was sent” page. In other words, once you’re signed in but the request is pending, there is no way to sign out.
I managed to sign out by clearing my browser’s local storage, session storage and cookies, and only then I was able to open the Miro links shared with me. It would be nice to have a sign out button on the “Your request was sent” page to avoid this bad user experience.