A well-known public HTTP only site will resolve this
You can use http://neverssl.com:
What?
This website is for when you try to open Facebook, Google, Amazon, etc
on a wifi network, and nothing happens. Type "http://neverssl.com"
into your browser's url bar, and you'll be able to log on.
How?
neverssl.com will never use SSL (also known as TLS). No encryption, no
strong authentication, no HSTS, no HTTP/2.0, just plain old
unencrypted HTTP and forever stuck in the dark ages of internet
security.
Why?
Normally, that's a bad idea. You should always use SSL and secure
encryption when possible. In fact, it's such a bad idea that most
websites are now using https by default.
And that's great, but it also means that if you're relying on
poorly-behaved wifi networks, it can be hard to get online. Secure
browsers and websites using https make it impossible for those wifi
networks to send you to a login or payment page. Basically, those
networks can't tap into your connection just like attackers can't.
Modern browsers are so good that they can remember when a website
supports encryption and even if you type in the website name, they'll
use https.
And if the network never redirects you to this page, well as you can
see, you're not missing much.