Why did my staff portal link stop working?

A dead portal link usually means it was regenerated (and the grace period ended) or the portal was disabled by the owner.

A staff portal link stops working for one of two reasons. If the page says "Portal not found", the link has been regenerated and any grace period on the old one has run out — get the current link from the Staff page or Settings → Security → Staff portal access and update your bookmarks. If it says "Staff portal unavailable", the owner has disabled the portal with the kill switch, and every sign-in is refused until it's re-enabled. Separately, if a device shows "This device needs to be set up" instead of the PIN pad, the link is fine but that device's pairing was revoked — an owner needs to pair it again.

Related: How do I rotate the portal link, revoke a device or lock the portal?