Opening loop2…

If nothing happened, the app may not be installed on this device.

In the app, paste the copied link on the sign-in screen. The link works once and expires quickly — request a new one from the app if it’s stale. “Continue in this browser” completes sign-in here instead (for the web app / no desktop app).

This link isn’t valid

It may be incomplete or tampered with. Open loop2 and request a fresh sign-in email.