If I am understanding correctly, your building has a WiFi network that
everyone can use, like a hotel. You do not have ownership of that WiFi.
And to connect to that WiFi, you connect to it, but then also have to
either log in via a splash page or ot...
You'll likely need to provide it power from a different source than the
USB on the TV, but if it's got HDMI, you should be good to go. If you
run into problems, it could be related to HDCP. In that case, you could
purchase a splitter to go in between...
Never tried, to be honest, as I have three of the, but to use one on
another chromecast would remove the pairing from the original
chromecast. So I assume you just have an extra remote? You should be
able to pair another remote to the chromecast, but...
Can you try : 1) A different browser? 2) Private/Incognito Window See if
it works in either of those situations. 3) If it's still no good, do you
have a different computer to try from? (trying to see if some Antivirus
or similar is problematic)
does it work on the phone App? I ask because your computer may have
something running blocking content; such as if you are running
BitDefender, you may have a setting blocking things. Your browser itself
could also be blocking, so you may need to add...