Account security.
Changing your password or e-mail, and permanently deleting your account - all from Settings → Security.
🔑 Changing your password
Enter your current password and a new one (at least 10 characters, entered twice to confirm). The moment you change it, every other signed-in device is automatically logged out - only the session you're using right now stays active. If a device shows up in your login history that you don't recognize, this is the fastest way to shut it out.
✉️ Changing your e-mail
Enter your new address and your current password. Your login switches to the new address immediately, but account access is suspended until you verify it - a fresh verification link is sent straight away, exactly like when you first registered.
🗑️ Deleting your account
Under Advanced account options, enter your password and type DELETE yournickname exactly to confirm. This is permanent and immediate: every photo, comment, like, follow and task record tied to your account is deleted from the live service, with no recovery afterward.