I can't believe this is the post that caused me to register after lurking since voat went down.
You are misunderstanding the technology. This isn't the browser, it's nitter's requirement. You can view their certificate requirements in your browser.
You can't just "allow" an exception on nitter because nitter REQUIRES a secure connection. Their SSL certificate specifies this. Their certificate flags to use HTTP Strict Transport Security, which ONLY allows secure connections. The reason your nitter plugin or redirect won't work is because they took the precaution to ensure that morons don't just allow an exception in the case that they did become compromised. What you are experiencing is the protection working as intended.
Also, to help you out, there is a maintained daemon that tracks the uptime of nitter instances. Here is a handy link for you - https://github.com/xnaas/nitter-instances
That will show you which nitter instances are working, their uptime, and their response time. You aren't even supposed to make nitter.net your default instance, and because everyone does anyway, it gets rate limited. Nitter is software. Distributed software. You are SUPPOSED to use it distributed. So update your plugin or your bookmark to use an available instance. If you are using Nitter Redirect (plugin/extension), it's as simple as clicking on the icon, then copy/paste the address for one of the other instances.
I swear, sometimes the tin-foil hats are a wee too tight around here.
Good day, and welcome to the future.
Okay, I posted a message as a quick response, then realized it didn't respond to what you'd actually said. Then I researched it, and now I'm ready to re-reply.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security
The stated purpose of "Strict Transport Security" is to prevent HTTP fallback on sites that should only be connected to via HTTPS. It is not to only allow connections with valid certificates, and it shouldn't be made impossible to get around IMO, especially when the connection is via HTTPS, and when I can examine the certificate and see for myself why it's considered invalid.
(post is archived)