Hi @Emmi B, thanks for reaching out — I understand how stressful that must feel!
In Miro, boards are tied to the team where they were created, not to individual user profiles. So if you've left or were removed from a team, your access to all boards on that team (including ones you created) is removed too.
Here’s what you can do:
Try to recall any teammates or admins who were part of that team — if you can contact them, they may be able to re-invite you so you can regain access to your boards.
If you don’t know who created the team and no one else comes to mind, you can also check any old invitation emails from Miro related to that team.