Originally Posted by ebor
I'm using just http, without the s. The message I get says "Security alert: The identity of this web site or the integrity of the connection cannot be verified. The security certificate is from a trusted certifying authority. The security certificate data is valid. The name on the security certificate is invalid or does not match the name of the site. Do you want to proceed?"
Forgive me if this is stating the obvious:
When you see the "do you want to proceed?" box, do you click "yes" and then "continue"? That should free up the keyboard, unless your cursor also gets frozen.
The oversensitivity (in my opinion) of both IE and MS Edge to security certificate accuracy, is one of the reasons I don't like to use either of those browsers.
Another thing you could try is to tell whatever AV program you have (Windows 10 has a self-contained AV, Windows Defender, even if you didn't install an additional AV) that www.wordtwist.org
is a safe site that does not need to be checked.