Can't log in to Facebook or Google Talk

[Ben Frey]

I successfully set up Pidgin on my laptop and desktop (both Windows 10) 
at home in Michigan. I'm currently at my in-laws' in Atlanta, and I can 
only connect to AIM. Google Chat says "unable to connect" to 
alt2.xmpp.l.google.com:5222 due to a timeout, and Facebook says the same 
thing, except the timeout is connecting to chat.facebook.com:5222. I've 
tried resetting my app password for Facebook, but no luck. What else can 
I try?
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