The default credentials for WatchGuard devices are:

For administration:

usuario:admin
clave:readwrite

For monitoring:

usuario:status
clave:readonly

Please note that if you log in via Web UI and want to make changes, you must use the admin password. If you log in via WatchGuard System Manager, you should use the username: status, and only use the admin username when making changes or if the application expressly requests it.

This is the login via WatchGuard System Manager:

a5b194fe-9178b71f-5a456a7d93ad66.96679852

This is the login via Web UI:

a5b194fe-9178b71f-5a456ab67ce936.65268638