Looking for logging into the Unifi Security Gateway site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Unifi Security Gateway site. After that you can login as usual with your login credentials.
https://dl.ubnt.com/guides/UniFi/USG_QSG.pdf
https://community.ubnt.com/t5/UniFi-Routing-Switching/USG-not-allowing-me-to-login-directly/td-p/1164966
https://help.ubnt.com/hc/en-us/articles/204909374-UniFi-Accounts-and-Passwords-for-Controller-Cloud-Key-and-Other-Devices
https://unifi.ubnt.com/
https://setuprouter.com/router/ubiquiti/unifi-security-gateway-pro-4/login.htm
https://www.youtube.com/watch?v=waxHcdlKSvk
https://www.youtube.com/watch?v=Ajw-FBkPURM
https://www.youtube.com/watch?v=qwwx7ZwZ-e8
https://www.youtube.com/watch?v=a_xHFJt4Pg0
https://www.youtube.com/watch?v=94ukUblLwU4
https://www.youtube.com/watch?v=nkQz2ksq7UY
https://www.youtube.com/watch?v=6kL_rl274rU
https://www.youtube.com/watch?v=nbkSfhITJrM