Version 0.3.5 · Firefox 140.0 or newer
Firefox will ask you to confirm. It keeps itself up to date after that, so you will not need to come back here.
Opens one browser tab per test person, all signed in at the same time, and walks you through the test plan for whatever you are checking. There is no password to remember and nothing to configure.
TAN-942.It works against local and staging only — the production addresses are not in the add-on and are refused in its code.
If it will not install, check your Firefox version: tab groups and the data consent key need 140.0.